433RF Wirele Switch This is a433 RF wirele switchpowered by battery, NOT a wired wifi switch. It only works when paired to devices supporting 433RF. The electronic chip of this switch is 1527 learning code, not copy code. It can be paired with most 433 devices with 1527 learning code module, frequency 433.92 Mhz. This 433 wirele switch work with the Wifi/Zigbee Wall Switch (No neutral) in our store, and it's also confirmed working with SONOFF brand products supporting 433RF. You can click following picture to buy the compatible products in our store. How to pair this 433 switch? For different device, the pairing method is defferent. It depends on the device this 433 switch is paired to. please refer to the instruction of the device this 433 switch is paired to. Example 1: Pairing method forSONOFF TX Switch: 1.Long pre the button on SONOFF TX switch until you hear a "beep" sound, release your finger. 2.Pre the button on 433 wirele switch, you will hear a "beep" sound after succeful pairing. Example 2: Pairing method forWETEN Wifi/Zigbee Touch Switch: 1. Long pre on wifi/zigbee switch button until the lamp change once, release the button 2. Pre the button on 433RF wirele switch once, pair succeed. NOTE: This 433 wirele switch will be