have you save/set it properly? sometimes you need a little patience with the button. recently i found out there was cheaper version of this module in the market, the hardware is looking same but sometimes the mode is different and limited so please check again with your supplier.

@projectid7432 hello, thanks for reply. After change the LOP setting, the timer now can be count down. But the one still missing is: the relay won't operate and the onboard LED won't also operate, while the timer is counting down, on and off. What now I have missed?

you can ask your supplier/seller for accurate datasheet, because different brand has different characteristics although the type is the same sla type

you can download here www.adafruit.com/datasheets/SFGDemoV2.0.rar

@@projectid7432 thanks however my ZA620 is not being recognised but its turning on.. i tried everthing the manual says about connecting the wires but still nothing. on the SFG it says "open device failed, please check the password and the device adress".

try this 1. swap your TX and RX pin 2. check your cable (it happen to me, the cable i used to connect arduino and fingerprint looking good but when i tested using multi-meter its dead wire) 3. try using arduino code to read your fingerprint, you can download the code and instruction in the adafruit page. some of my fingerprints did not work with the software but all my fingerprint module worked well using arduino code

@@projectid7432ALRIGHT THANKS A LOT

nope, it is different module.

I looked up the as5600 datasheet and it says 0.5mm - 3mm but it depends on the magnet, in case anyone else comes here with this question. I have this board but haven't tested it yet. Going to be testing it soon :)

@@waynefilkins8394RtFm

Diametrically magnetised magnets or normal magnets

​@@jetwayartisman diametrically magnetised. They generally come with the board when you purchase

yes of course, but you have to remove/change the battery when it run out the capacity

@@projectid7432 Ok thanks 👍