Phone remote control relay module

Can use mobile phone or landline telephone anywhere on a global scale control all kinds of household electric and electronic products, operation is simple and easy to use, low price advantage:
* there is no limited to the distance
* don't have to carry the remote transmitter
* no electromagnetic radiation interference
* is not affected by interference
* don't trigger
The input voltage: 12 v
Static working current: 14 ma
Panel size: 88*38*20mm
How to use

1. install the telephone wire to the switch ,and the wire can be parallel connected with wire of telephone itself .

2. input the 12v power .call the telephone ,and 7 times no people answer it , the receiver would turn to work on itself .

3. and then put into 4 orignal password .

press 1 the first channel would be open ,and press 2 the first channel close ,press 3 the second channel would be open ,press 4 the second channel would be close .

change your pass word :press *input 4 news password and press *to confirm it .when power is off it will turn back to the orignal password (5678).

#is hang up .

you just need to add one more telephone wire and it can share the same number with your telephone number and it won't affact the function of your telephone