RF Wall Switch Cover
thingiverse
I came up with a cheap way to add Sonoff to my lights since the switch box did not have a neutral wire. This is version 1 so there's room for improvement. Part list: ($2.55 for the switch, $9.43 for Sonoff RF, ~$12 total) TX118SA RF Module (https://www.aliexpress.com/item/433-mhz-Mini-Wireless-RF-Remote-Control-1527-EV1527-Learning-code-433mhz-Transmitter-For-Gate-garage/32723322798.html) 2x CR2032 Button Batteries (https://www.aliexpress.com/item/YCDC-6Pcs-card-Bateria-CR2032-3V-Lithium-Button-Battery-5004LC-BR2032-DL2032-ECR2032-KCR2032-Lithium-Batteries/32826210960.html) Push Button (https://www.aliexpress.com/item/6-6-4-3mm-30-pcs-for-Tact-Switch-Push-Button-Tactile-Pushbutton-LCD-Screen-Monitor/32701183232.html) Sonoff RF (https://www.aliexpress.com/item/Sonoff-433Mhz-Sonoff-RF-WiFi-Wireless-Smart-Switch-Home-With-RF-Receiver-Remote-Control-Smart-Timing/32838555712.html)
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