External reset signal: active at low level, externally need to pull up a
10K resistor to 3.3V, and connect a 100nF capacitor to ground.
4.Function Description
4.1. Module function
PSF-B01 module can be used as a single-channel switch, which can control the switch
locally or remotely through APP.
The following is the function description:
1. Pairingmethod: quick pairing mode / compatible pairing mode.
Press and hold the button (IO0 pull-down, default high level) for more than 5s to enter
the quick pairing mode. When it is in the quick pairing mode, press the button for more
than 5s again to enter the compatible pairing mode. APP can be configured in both
modes. Please refer to 4.3 for details of the configuration method.
2. Switch:
3. In the normal state: click the button (IO0 pulls down for more than 100ms) to control the
relay on and off (IO12 output high/low level)
4. In the pairing mode: click the button to exit the pairing mode.
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