Teckin SR40 Wall Outlet
Model reference: RF-SR40-US
Teckin SR40

Available from:

Flashed with:

GPIO #Component
GPIO00 LedLinki
GPIO01 None
GPIO02 None
GPIO03 Button1
GPIO04 Led1i
GPIO05 Button2
GPIO09 None
GPIO10 None
GPIO12 Relay2
GPIO13 Relay1
GPIO14 Led2i
GPIO15 Relay3
GPIO16 None



Tuya-Convert might not be possible for this device if the manufacturer started using newest Tuya firmware since this template was published. Instead you can likely serial flash Tasmota without soldering with a flashing jig, if the device is easily opened.

You will also have to add the following commands in the console to make this work properly.

Backlog SerialLog 0; PowerOnState 0; SetOption63 1; LEDState 1
Rule1 ON System#Boot DO Power3 On ENDON    # Turn the USB port on
Rule1 1

The model purchased from Amazon 2020-03 has this GPIO Mapping

GPIO0: Green Center LED inverted
GPIO3: Top Button
GPIO4: Amber Top LED inverted
GPIO5: Bottom Button
GPIO12: Bottom Outlet Relay
GPIO13: Top Outlet Relay
GPIO14: Amber Bottom LED inverted
GPIO15: USB Relay