I have a need for a wireless pushbutton to run an automation and made a discovery that may help others so I thought I would share my discovery here.
For this wireless pushbutton I wanted something simple, low power, and battery operated. As a result I thought there was a way to re-purpose some of the GS-WDS07 wireless door contact switches I have laying around and add a pushbutton to one of these spare units. My original plan was to open up the unit and solder some leads to the read switch that is located in these devices to detect the open and closed for the windows and doors that these are typically mounted on. What I discovered when I opened the unit was that there are some unused contacts on the circuit board that are actually labeled “S2” where as the read switch is connected to terminals “S1” I thought this may be too good to be true so I fired up the console on my Sonoff RF Bridge and low and behold closing these contacts on the circuit board displayed a unique message in the console. Normally these switches display three (3) different messages depending on Opened: #####A, Closed: #####E, Or Battery Low: #####6. What was discovered when I closed the “S2” contact was that it is sending a result code of #####7. So all I need to do is connect a couple wires to the through holes on the circuit board and connect to a pushbutton and I am golden. Here is a picture of the circuit board for reference to those who may have a use for this as well.
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