Ring & Nest Doorbells Require 24Volt, 48VA Powerful Transformer

( Need one? Scroll down to the bottom for the link to buy! )
Replacement with heavy duty doorbell transformer for Ring & Nest doorbell that requires only 16v, 30va. Wire colors explained.
The standard household voltage is 120v. A doorbell only uses 10v to 24v. The transformer drops the voltage, so the 120v household circuit is reduced to 10v to 24v for powering the chime unit and bell button. The Ring and Nest need 16v.
There are two screws for connecting two low-voltage wires for the doorbell system. Because they’re low voltage, they can’t give a bad electric shock.
Turn off the breaker to the transformer before you get started. The transformer voltage is 24v. The Ring and Nest need 16v and 30va (volt amps, like watts). This one is 24v and 48va - more power.
1. If you are not getting a power signal from the Ring transformer, it may be the doorbell transformer is burnt out, or is under-powered.
2. If the wifi network is slower, check-out the speed and how many connected devices you have. Upgrade the wifi router for multiple simultaneous devices to cure the slow Ring’s response time. And a low-powered transformer causes intermittent performance.
3. For the Ring with a rechargeable battery, the new transformer will constantly charge the battery. Battery wear is from poor wifi signal, audio and video, or motion detection.
4. If there are long wiring runs over 70 feet, you should get the 24v transformer, not the 16v unit.
Wiring: Connect black wire from transformer to your black wire household electric current (hot); white wire from transformer to white household (neutral); and green (or stripped copper) wire to a ground (like the metal wire box).
When the power is off, remove the transformer. Remember which lines are going where - power, ground, neutral, the front door, the back door, the chime. Strip the wire casings and get a good, clean connection.
On the other side of the transformer will be for the energy outlet. There are two, maybe three screws. One is for the push buttons, next will be for the chime, and if there's a third, it’s for speakers or something. Connect all of the push button wires to the same screw. There’s only one chime. And the third, if so, should all be connected together if they are the same.
After the wires are attached, mount the new transformer in the same location.
Test the doorbell
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[@kman915]

I used a 16v 30VA Transformer for my Arlo doorbell cam. And works great. Unfortunately I had a dilemma with Arlo using their voltage regulator that came with the doorbell kit. That thing kept blowing the transformers, I went through 4 of them. Even ran new wiring, still kept blowing. So, I tried without it, and it was working fine. The setup instructions said to install that voltage regulator, well in my case, that's a hell no!!

[@bradmcclendon4597]

Excellent, excellent description & walk-through! Thank you for the suggestion on the transformer with "taps" -- I was going to get one via your website but it's sold-out. I would also keep the output at 16VAC as our chimes are spec'd at 16V.

[@robsaxepga]

I don't think I need one of these for my install but this guy makes me want to buy one anyway. 😂

[@erichoward5565]

Perfect suggestion for Ring Doorbell Pro 2..Thanks..

[@dcshoeman2k4]

Great video. Thank you Mr. Hardware!

[@reynos014]

Very nice , straight to the point 👌🏽👌🏽👌🏽

[@voices3312]

Great video Blair!!!

[@micbyte]

Thank you I had the exact conv with my hardware guy. He was correct and so are you.... I am going to talk to Ring as I purchased a new Transformer and it’s buzzing so they can pay for that useless purchase . Thanks to you.

[@l31007]

Mine was in the garage between the water heater and the door, on the wall about 7 feet high from the ground.

[@ronaldpalomeque4132]

Thanks for the info

[@Dstromb232]

Thanks for the info!

[@n.g.1577]

Is it possible to piggyback from a wall outlet/receptacle by using pigtails? I have a similar light to the one you're using here to demonstrate, but ours have the wall on/off switch, so I don't think the same application is going to work for us. However, we do have a 15amp receptacle, breaker at the main panel, that's near where we want the doorbell camera installed. Thank you for all you do.

[@uol1051]

Thank you for the clearest demo and visuals regarding this task. Thumbs up.

[@henrycruz45cal]

Nice clear explanation. Thank you

[@GruntSpc]

THANK YOU!!!!😊

[@beckyschwantes5287]

When hardwiring a “ring” doorbell the low voltage from the transformer is only for trickle charging the battery. It does not use the low voltage power to operate the units functions.

[@rrhistorian8828]

The Ring Pro doesn’t have a battery and you need to use a 16V 30 VA or 20 volt, 20 VA transformer for it to also ring the home’s doorbell when the button is pushed.

[@mikefixac]

After all these years, volt amps=watts. Of course. Never thought it through, but now I wonder why it just not listed as watts. May be trivial, but now I"m wondering if a lower gage wire might be in order. Excellent video.

[@MrHardware1]

No, lower gauge wire restricts the flow of electricity, never a good idea unless your making a toaster. Restrict electricity and you’ll make heat.

[@mikefixac]

@@MrHardware1 Wouldn't 10 gauge be lower {less restrictive} than 18 gauge? Maybe I said it wrong.

[@MrHardware1]

@@mikefixac yes it is, when you said lower I assumed you meant smaller

[@amanberhe2201]

''After all these years, volt amps=watts'' Really?

[@deehood3178]

Mine transmitter is making a wining noise since install, is that normal or do I need too disconnect the green n copper wire?

[@michaelkowall]

Great video but now do we need to replace the chime to a 24v as the existing one was a 9-16v chime? I feel like I am going to fry my chime.

[@AntonioClaudioMichael]

Good informative video though

[@WindowsFREDO]

The resistance is necessary right now, I put an adapter 127 volts to 24 volts 1350 mA and I had it for a few minutes like this now my ring doorbell 2 works everything but when it transmits video the horns sound like analog TV with no signal I'm afraid that I have already damaged it yes yes disassemble it and remove the speakers and use it like this now on

[@iayshasamad1613]

The transformer that worked for my ring door bell for the last 2 years blew it was 16 v 15VA I purchased a 18V 30VA ihave 18 volts out to the ring bell and now the ring wont light up. not sure if the old transformer blowing harmed the ring or I need a bigger transformer? I am leaning towards the rign got damaged.

[@maxsinventions8913]

How does the lil thing use 48 watts?

[@jtrevathan33]

I've been looking for my transformer, thought I was going to need a camera to look inside walls cause i couldn't track it down. I saw that your was on the light, sure enough mine was hiding from me on top of the light in my furnace room.

[@MrHardware1]

They get warm, sometimes hot, so placement in a wall or other enclosed area is a bad idea.

[@rocketrider1405]

Hard to see fine details of the hookups, but still helpful !

[@zerlegen3919]

My transfer is also connected into the light just as in the video. Just as the in the video, I have two black wires connected to the transformer. I'm not sure where those two black wires would connect to? If it the 16va wires that are labeled as such on the transformer and does it matter which black wire go to what? I understand the wiring from the doorbell on the outside of the transformer, just not inside the guts where I have just the two black wires.

[@blairgilbert7606]

There is no polarity to the 110v side of some transformers. So one wire goes black to black and the other goes black to white. I wish they make one of the power wires white to make it easier to homeowners.

[@Germatti13489]

Can you have your ring doorbell attached to your doorbell electricity but also be able to keep/run your doorbell? If you have a second doorbell does the ring doorbell affect that doorbell? Thank you ❤️👵

[@MrHardware1]

Sorry, I can’t answer that. It would be a good question for ring techs.

[@arthurharrison1345]

A VA (voltampere) is only equivalent to a watt when the power factor is unity.

[@westbay5858]

I have 3 wires on my secondary. Hammond part # 166L25 Green , Green/yellow, Green Is the Green/Yellow common? They gave me two secondaries? Could I not have just run an extra wire to a single secondary to run my two items?

[@blairgilbert7606]

Will have to go to the manufacturers manual or spec sheet for the information. Sorry I don’t know this one

[@josep2807]

Hello. I have a question - hope you can be of assistance. I’m in the process of doing some minor renovations to my home and I want to remove my rear doorbell. Obviously I’m going to remove the doorbell and patch it up with stucco. By disconnecting the rear wire from the chime box, will that be enough or are there other steps I need to take? Thank you in advance

[@MrHardware1]

I would find the transformer, that’s where the second wire from the button goes, and disconnect it also.

[@robinslover70]

I have a rare situation. I’m installing a eufy camera doorbell in an apartment complex that doesn’t have enough voltage to operate the camera. The transformer operates the doorbells of all 4 apartments in the building so I cannot and maintenance obviously won’t upgrade the transformer. Is there a way to bump up the voltage with some kind of inline voltage booster/transformer?

[@MrHardware1]

You may be able to get a plug in the wall transformer and wire your camera to that. No way to upgrade in line voltage coming from the transformer that I am aware of

[@TylerDalton]

Thanks for the video- can you provide a link for the transformer you used?

[@MrHardware1]

HEATHCO SL-122-01 OR SL-125-02

[@Chip4AU]

@@MrHardware1 Thanks

[@TylerDalton]

Alan Whiteside thanks- I ended up doing the same and switched it out a few weeks ago.

[@MrBenovi]

@@MrHardware1 the transformer in the video says SUPCO t45. The SL-122-01 or SL-125-02 are both 10va.

[@deaconpladek]

Hi, I've seen some youtube videos require a resister to be in series with the circuit if not using a physical chime box. Seems like the resister is to absorb the power surge. Does Ring require this or have they figured out how to simply use 24VAC at 40VA? I bought another brand and it cooked without a resister, so I'm not wanting to blow up a ring product... if at all possible.

[@MrHardware1]

You’re out of my pay grade on where and when to use the resistor. They deliver resistance and emulate a load, but I’d follow directions to a tee. Possibly calling customer support, not KZbin……

[@TechnicalLee]

A 16V 30VA transformer is plenty for video doorbells, the 24V 48VA transformer shown is overkill, has more confusing wires, and when wired for 16V only produces 32VA anyway (2 amp current limit). Just buy the Ring branded 16V 30VA transformer and make your life easier.

[@psfgtech]

White and red wires doorbell in FL only, i think im going with battery next

[@blackknife1]

I found my old transformer was only 8 volts, so I upgraded to a 24v 40 watt transformer (wall wart style). I still can't get my mechanical doorbell chime to ring. The chime for the back door still works fine, but not the front door. The Nest doorbell works otherwise. My front door is about 15' away from the doorbell chime unit, so maybe it's not getting the signal? There is nothing physically blocking the chime from operating either. I even bought a 16v transformer, but that didn't help. I have read that some chimes just aren't compatible. Mine is about 10 years old, but maybe that's the issue, we'll see

[@missmam17able]

My issue was that I didn’t change the settings for that particular door to ring inside the home. I only had the video on.

[@HsingSun]

Do you have 30A on that transformer?

[@ramblinman7153]

I had my nest originally connected to a 16V10VA transformer. It worked fine for six months. Then every time the doorbell rang, the nest would reboot. So I upgraded to a 16V30VA transformer. I'm still having the same issue.

[@trevorlangston172]

Mine just started doing this as well any luck on a resolution?

[@ramblinman7153]

@@trevorlangston172 no luck. I just turned off the indoor chime in the app and use my Google Home to announce when the doorbell is rung.

[@trevorlangston172]

@@ramblinman7153 yeah, mine works fine with the indoor chime off as well. I wonder if I stepped it up to a 24v 40va transformer if it would work. I will try it and let you know the results. I also have a warranty replacement for the doorbell coming. Hopefully I can marrow down the issue.

[@whopua]

@@trevorlangston172 how did you fare?

[@trevorlangston172]

@@whopua I found out that my transformer was bad.. bought a new one and replaced.. everything is working fine!

[@bareyb]

The two transformers you linked to are both only 30 VA not the 48VA you recommended in the video. Where can I get the Supco you are showing in the video?

[@MrHardware1]

Call store, 586-776-9532 and we’ll ship. I’m checking to put it on our site, soon there.

[@troyhenry3267]

@@MrHardware1 Is this 24v xfrmer available now on amazon or your site ???

[@MrHardware1]

@@troyhenry3267 we are currently changing the transformer on mrhardware.com to a better one. Call Gilbert’s Hardware and ask for Daniel and he can sell and ship one if needed. It may take a week to change the store shopping cart.

[@MeezyPeezy]

I wish you would have shown hooking up the transformer with whatever wires were coming off the light .. i have the same setup but am confused

[@MrHardware1]

The transformer is fed w/the black and white wires feeding the light.

[@ChrisYorky]

I have 48volts at the arlo door bell front door. I have 24v at the rear door bell. However at the chime I have 24v front and 0 rear. My issue is the arlo camera got fried. I found a transformer under my home and it had 24v I'm lost .

[@MrHardware1]

There should be no way you’re getting 48 bolts on the doorbell circuit. Look at me like you should get a professional to oversee what’s going on at your house.

[@andy_o6133]

Can I hook up a transformer for a ring doorbell to a outlet that has three Romax connected to it already? I think someone added to the outlet that had my doorbell chime box, transformer connected to it.

[@MrHardware1]

Normally yes, however a pro should approve the location (due to hear generated by a transformer) and verify there is enough room in the box for 2 more wires.

[@MichaelKelly-yu3nl]

I was told to use a 24v 40VA transformer for my Lorex doorbell camera. After installing the transformer I have 27.9 volts at the doorbell camera. After making the switch the camera was working fine for about a half hour then it just cut out and wont work anymore. Any chance 28 volts is too much for doorbell camera? Thanks in advance.

[@MrHardware1]

Sorry, that is above my pay grade. You need to call technical help from the manufacturer.

[@PeteyPablo408]

I have a old house I have 2 black wires coming from electrical system hooked up to the old transformer How do I hook up the new transformer that has 3 wires 1black 1 green and 1 white ?

[@MrHardware1]

The black and the white go to the 2 power wires, the green ‘ground wire’ screws to the box or connects to a cold water pipe. If you have any doubt contact a local electrician to be safe.

[@troyhenry3267]

I want to buy this transformer, but i'm concerned that it won't fit in my doorbell chime housing located on my foyer wall. Any concerns here ?? do you think it will fit??

[@MrHardware1]

I got this from Supco’s website, Dimensions: 2 1/16" X 3 1/4" X 2 3/4"

[@cdbnum1]

Ring makes a plug-in transformer that you can plug into an existing outlet.

[@nateswanson]

I’m planning to power 2 ring doorbells. Will I need 2 separate transformers?

[@MrHardware1]

Not if the doorbell’s share one now. You’ll need one w/30 to 40va (Watts). I wouldn’t take a chance, I’d get a 40va and do it once.

[@miniteeg]

I got a 24V 40VA transformer for my Ring doorbell, that's the power required by Ring. After 2 minutes of connection to the doorbell, it gets very hot and starts smelling a burn. What is the reason for that and how do I fix it?

[@MrHardware1]

Very hot and a smell means there’s a short in the wiring. Or a defective transformer. Connect the transformer to the power but don’t connect the low voltage wires and see if it gets hot then. If so Disconnect immediately. Somewhere along the line one of your wires must be shorted out to another and the only way to do that is the hard way, follow the wires all the way.

[@miniteeg]

@Mr. Hardware it looks like the short circuit is on the ring itself as the 2 wires connected to the terminals get warm immediately. This must have happened when I first connected the Ring directly to the wall wires that were connected to the stock doorbell without connecting the transformer first. This lasted for few seconds but was probably enough to make a short on the Ring board. Luckily it works with the battery power. I will try to find someone who can dismantle the Ring device and check it out.

[@BMar1andonly]

Sooo; can’t find the transformer. Anyway to increase the power without replacing the transformer?

[@MrHardware1]

If you call our store, we’ll ship. 586-596-7276

[@sengyang8429]

Kind of confused about the wiring, my house has 3 wires black, white, and green (ground) and my current transformer has 3 wires black, white, and green. When looking at the transformer listed on your site only has 2 wires coming out of the transformer (Black[hot] and White[neutral]) but it is missing the green wire which is the ground. What do I do with my in-homes ground (green) wire then?

[@MrHardware1]

Ground it to the metal box if it is metal. And connect the ground wire to the metal frame of the transformer, however all new transformers come w a ground wire.

[@verleneperry-newburn905]

@@MrHardware1, my transformer that I removed did only had two wires, no ground. The new one has a ground and the electrical box has a bare copper, do I still attached the green ground to the metal box or connect it to the bare copper?

[@MrHardware1]

@@verleneperry-newburn905 both, the box should be grounded and of course connect to the green transformer wire.

[@CorneliusSmalleliterealtor]

My new transformer didn’t have a green grounding wire, what do you connect the ground wire from the wall to?

[@MrHardware1]

The box if there isn’t a ground screw or wire on the transformer

[@CorneliusSmalleliterealtor]

@@MrHardware1 thanks

[@MrBababuwi]

The stepdown transformer on display isn't the same on the link.

[@MrHardware1]

The actual transformer does change as the availability from suppliers changes. The device stays basically the same, wattage and voltage are the important numbers which we are aware of and maintain.

[@dawndawnster]

So the ground wire doesn't need to be "connected " to anything?

[@MrHardware1]

Oh yes it does by code. Older homes in my area weren’t wired w/grounded wire, hence no ground available unless you run a ground wire to the panel or a cold water pipe which isn’t as simple as I’m saying and needs to be overseen by a contractor on site.

[@smjohn4640]

Can I wire the transformer to a 15A / 125V electrical wall outlet (reading 119.7 V) near the door? I installed a 3-Gang 55 cu. in. PVC blue electrical box under the electrical wall outlet near my front door. I then wired the transformer to the wall outlet (white to white, black to black, and ground to ground) and installed the transformer in the blue electrical box. But the transformer powers the doorbell for a few minutes then dies. I have used 2 of these transformers (brand new) that you installed in this video and they both powered the doorbell for a few minutes then died and stopped working, with 0.00 volts showing on the multimeter tester😡. Then I bought a Defiant 16VAC/30VA transformer from Home Depot and same thing happens? 😡 What am I doing wrong? Please help.

[@MrHardware1]

It sounds like there is a short in the wiring somehow. Did the doorbell hum when you hooked up the wires? The Ring sends power to the old doorbell when the button is pushed, maybe the old doorbell is getting electricity all the time killing the transformers?

[@jonathanr1913]

I’m trying to power three separate Lorex video doorbells and a mechanical chime. There’s not enough juice to power more than one doorbell at a time with the 24VAC 40vA transformer I had purchased. Now the challenge is to figure out if u need three separate transformers or not. I had planned to connect my main entry door to the “front” chime terminal and the other two doorbells to the “rear” chime terminal so I know which doors are being pressed audibly when I don’t have my phone on me. Anyone have advice for me on working these three doorbells with plenty of juice to keep them running and to operate with the mechanical chime aswell?

[@MrHardware1]

I would contact Lorex for advice, they should have seen this before.

[@jonathanr1913]

@@MrHardware1 how many doorbells were you powering up in this video.

[@MrHardware1]

@@jonathanr1913 one doorbell with the front and rear button.

[@nikebluegoodwood]

My existing transformer only has two wires but all 30v transformers have three wires any help

[@MrHardware1]

Either one is a ground, green, or you have a multi voltage transformer. Only the manual will tell you which colors provide the difference voltages.

[@nikebluegoodwood]

@@MrHardware1 left the ground capped off ran neutral and power. I'll let you guys know if the house ever catches 😂👍

[@soldatheero]

Can I put a door bell transformer on the outside of a device box inside a wall that has insulation???

[@MrHardware1]

First off it must remain accessible. So it cannot be closed in a wall. They get hot so I always leave them on a metal box and away from combustibles.

[@soldatheero]

@@MrHardware1 Yeah I think it is better on the inside of the box no doubt. However I think it could be argued that if if the device box is arena box that can be loosened off the drywall u could technically still access it by pulling the whole box out of the hole. Probably wouldn't fly with an inspector tho I suppose.

[@MrHardware1]

@@soldatheero You could put the transformer inside of a two gang box and then with a two gang blank cover you could cover it up and no one would know but yet there’s always be access to it.

[@soldatheero]

going to drill a 1/2 hole in the side and use the nipple on the transformer to mount it there.

[@spacecoastz4026]

Wait at 2:47....30 VA is 30 watts...or is it 30 volt amps? If volts times amps equals watts...wouldn't it be 16V time 30VA equals 480 watts?

[@MrHardware1]

Watts and volt-amps are the same. 30 VA divided by 16 equals just less than 2 Amps.

[@spacecoastz4026]

@@MrHardware1 thanks.

[@AntonioClaudioMichael]

Ring doorbell pro recamends 24volt 40va when you also have a mechanical door bell or door bell chime and more then 1 camera

[@AntonioClaudioMichael]

@4Runn1nYota yes ground goes to ground the orginal transformer from the 60s didnt have a ground and its not required to use i wired it a few days later because it wasnt technically needed you dont need to wire it if your house didn't have the transformer grounded it was 123 degrees outside which is why I didn't wire it

[@chubbuck35]

Where do I find my transformer at my house?

[@AntonioClaudioMichael]

@@chubbuck35 what state are you located in and how old is your House?

[@chubbuck35]

@@AntonioClaudioMichael The house is 15 years old in Idaho. We have an intercom system (including for our front doorbell) and the doorbell pumps through all of the intercoms to ring. I'm at a loss of where to find the transformer. It's not by the breaker box. Do I need to take a look behind all of my intercom units in the house?

[@AntonioClaudioMichael]

@@chubbuck35 the transformer could be behind the intercoms it can also be in the breaker box itself

[@Marco-bb7np]

What is the wire gauge that goes from the transformer to the ring bell camera?

[@MrHardware1]

Usually 18 gauge is sufficient, but if I’m running a long distance (over 50’) maybe I’d use 16 gauge.

[@Marco-bb7np]

Thanks for the response. My transformer went out, replaced but I think I burned out the new one as just a few minutes later stopped working

[@MrHardware1]

@@Marco-bb7np that is a good indication that your bell wires are shorted out somewhere between here and the buttons and chime. It’s just making the transformer run full speed until it burns up.

[@MrHardware1]

@@Marco-bb7np it is not uncommon for an amateur wiring this up causing a dead short in the wiring. Often when a feed to the chime is at the transformer location. Consider a pro to look in on you……

[@rswow]

Title says "Ring & Nest Doorbells Require 24Volt" but the video says 16V. So, which is it?

[@MrHardware1]

This is an old video, when they first came out they were to run on a 16 V transformer which is the old doorbell transformer. At the time upping the transformer to a 24 V transformer allowed the unit to run properly. I believe the power draw on the ring doorbell has been adjusted by the manufacturer to run on a little less power than the first ones sold.

[@rswow]

@@MrHardware1 So, should we use a 16v or 24v transformer? After a lot of thought & research, I ordered the 24v one, but wonder if it may prematurely wear out the gadgets. Also, how to tell if a model has a thermal cut-off? I got the Maxdot brand.

[@MrHardware1]

@@rswow I would consult w/the manufacturer of your accessories, things change that I don’t have time to monitor.

[@Knight_Glider]

The only thing that would've made this video better was a link to that transformer

[@MrHardware1]

Hey William! You can purchase one by going to our website, here is the link! mrhardware.com/store/#!/Doorbell-Transformer-30-VA-16-VAC/p/389512828/category=0

[@tdz69]

Sucks when you can’t find the existing old transformer in the house.

[@NorseLax07]

Had that same problem. Couldn't locate the transformer to save my life. Watched this video and immediately found it mounted to the top of the junction box right above a wired smoke alarm in the basement. Could barely see it.

[@technologist1412]

Me too. I was going all over the house and couldn't find it, then watched this video. It was in the HVAC room connected to the ceiling light. Mr. Hardware you are the man!

[@kevinbarton1819]

I say look for a tone sender! You put clips on the end of the doorbell wires behind your doorbell and follow the beeps from the sender

[@ojulieann]

I’m still looking . . .

[@larryreid8562]

Attaching the doorbell to the mount is a little difficult but once it locks into place it seems extremely sturdy. kzbin.infoUgkxxHZwMa8CsRjYhf9s4W8w0Dwm47uytWOp I replaced my regular doorbell with this and hard wired it in, using my existing wires and mechanical chime. It works perfect so far and integrates perfectly with my blink camera system. It also works seamlessly with Alexa

[@amanberhe2201]

mine works with 16V 10VA it is unnecessary to buy 48VA

[@DuhChamp001]

So wait. These companies are supplying incorrect wattage information?

[@blairgilbert7606]

I don’t think so, they just don’t stress that some units require a higher wattage than many homes have available.

[@pimptrizkit5317]

What Blair said... also, I think the doorbell companies don't tell you to add the power requirements of your chime (while chiming) to the power requirements of the "smart" doorbell (while streaming hi-def video and two way audio)... that kicks it up a bit, and most household transformers can't keep up. I would even doubt a 30VA, depending on the chime and the doorbell combination. These smart doorbells can be touchy when the voltage dips below 16V for even a moment. Which will happen on a transformer that is getting close to max (ie. Amp draw is too high). This video is right, I would rather try to keep the voltage near the recommended range instead of using a 24V to cover the difference. Even if the doorbell says it can handle 24V... a new 24V transformer puts out more than 24V... so thats risky.... same issue with the chime. So more VA (instead of more V) to cover the combined loads, plus a healthy bit extra.

[@Icantdoitabymore]

Hi Mr. Gilbert, I have a ring but it is buzzing and if my front porch light is off (at night) it rings fast. Any ideas? Do you think this would help me because my transformer is 10AV and 16a.

[@blairgilbert7606]

Sorry, the ring is out of my expertise.

[@tommymctomerson7972]

I had the same exact issue. I just installed a 16vac/30va transformer and I have no issues at all anymore. Mine was also what you had.

[@mrindependent1]

We have 120v my guy Not 110v