Hot to setup this wireless relay without a learning button?

Thread Starter

LAOADAM

Joined Nov 21, 2018
658
Hi,
The pictures shown a wireless relay that don't have a learning button, how can pair it with a Transmitter
Thanks
Adam
WeChat Image_20210918172335.jpgTransmitter.PNGWeChat Image_20210918171519.jpgWeChat Image_20210918171524.jpg
 
Last edited:

LesJones

Joined Jan 8, 2017
3,571
It looks like your device uses a PT2277 IC for decoding the code. This chip does not learn codes. The code is set by setting the address pins high, low or floating. In the picture of the etch side of your board you can see that a number of pins on the PT2277 have a strip of etch above and below them. One is at ground potential and the other is at Vcc potential You set the code by dridging the address pins to ground, Vcc or leave them floating. The PT2277 is a family of ICs that give different types of functionality. If the transmitter is not the one supplied with the receiver there is a good chance that it will not work.
Here is a link to the datasheet on the PT2277 family of devices.

Les.
 

Thread Starter

LAOADAM

Joined Nov 21, 2018
658
It looks like your device uses a PT2277 IC for decoding the code. This chip does not learn codes. The code is set by setting the address pins high, low or floating. In the picture of the etch side of your board you can see that a number of pins on the PT2277 have a strip of etch above and below them. One is at ground potential and the other is at Vcc potential You set the code by dridging the address pins to ground, Vcc or leave them floating. The PT2277 is a family of ICs that give different types of functionality. If the transmitter is not the one supplied with the receiver there is a good chance that it will not work.
Here is a link to the datasheet on the PT2277 family of devices.

Les.
Thank you very much.
Its too complex to use it, seems even I find the transmitter from the one supplied with the receiver, may still need some procedure to active it.
 
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