I have a Wemo Smart Switch similar to the one in the picture below.
Using Wemo app from an iPhone the switch can be controlled. I am interested in learning electrical signal behavior of the white wire (as shown in the picture below) which I believe is the one responsible for controlling the Wemo Smart Switch.
Looking at OpenWrt Wiki Belkin F7C027 it looks like the signals are
- White (GPIO13) - AC Relay control
- Black - GND
- Red - 5V
- GPIO14 - 0V off (default) 3.3V on
As state above does anyone know the electrical signal behavior of the white wire? Is the signal a simple High/Low (on/off), pulse (toggle) or something other like a pulse train (data communication)?