QIACHIP RF433M Module Receiver and Transmitter Built-in Learning Code 1527 Decoding 4 Channel Output

【Application environment】Remote control switch, receiver module, motorcycles, automobile anti-theft products, home security products, electric doors, remote control socket, remote control LED, garage door remote control, remote control door opener, remote control curtains, alarm host, remote control MP3.
Link to buy in germany: www.amazon.de/...
[Transmitter module ] Product Model: TX118SA-4
Transmitting power: 11dbm
Emission current: 10 mA
Rate of fire: maximum 10KB / S
Operating Voltage: DC 3V-24V
Encoding : EV1527 Learning code
Each module has a unique ID address code.
All modules K1-K4 four key code is the same.
[Receiver module ] Product Model: RX480E-4
Working Voltage : DC3.3~5V
Quiescent Current : ≤5mA
Output current : 10 mA
Working Frequency: 433MHz
Receive Sensitivity: -108dB
Working Temperature : -25~75
Working mode: Momentary Mode , self-locking (Toggle-Mode of the 4 Channels) , interlocking
The output: 4 channel CMOS level signal Corresponding to the remote control ABCD 4 buttons.
Pins Instruction
GND : ground or negative pole
+V : DC3.3~5V input
D0: Data output
D1: Data output
D2: Data output
D3: Data output
VT: Output
[How to match the transmitter and receiver]
1. Delete existing data: Press learning button(on the receiver) 8 times. Response: LED flashes 7 times.
2. Learning remote code: press learning button(on the receiver) once, twice or three times (see below).
LED turns on: learning mode is active.
Press any button of the remote control.
LED indicator flashes three times: learning successfully completed.
3. Test: after the above operation , the receiver board can be controlled by the remote control.
More transmitters with different IDs can be learned and stored additionally, starting with step 2. A mixture of different modes is possible.
Button usage (sets mode and starts pairing process):
Press once: Inching mode (Momentary Mode)
Press twice: self-Lock Mode (Toggle-Mode of the 4 Channels)
Press three times: interlocked mode (selected channel active and be cleared, if another channel becomes active)
" VT " On the receiver what is used for ?
The VT pin has 2 functions：
1, Using VT to control the LED as an Indicator, when any pin D0-D3 signal output, VT have a signal output at the same time.
2, Using VT and +V can replace the button function on the receiver. (Note：The VT terminal is active when a signal is received, i.e. if any of the 4 channels is "turned on" the VT line is "turned on".）
Product from :
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[@abhijeetsinghchauhan34]

Why only 240p ? 😅

[@StefanoMartinengo]

Just received a set. When i press the learning button 8 times, there is no response on the LED. It stays lit but doesn't blink/flash. Is this a faulty chip?

[@wattage2007]

It’s not very obvious what’s going on here.