Specifications Hign-concerned Chemical:None Frequency:433 MHz Wireless Communication:RF Use:TV,Air Conditioner,Computer,Universal,Projectors,Audio / Video Players,Camera / Video Camera,Speaker,Lighting,Electric Door,Automated curtains Origin:Mainland China Specification: Transmitter (Remote) : Operating frequency: 433MHz Power by 2 Pcs 3V CR2016 Battery (Battery included ) Material: PVC; Button: 2 buttons; Size: 60mm x 30mm; Operating voltage: 3V ; Operating Current: 12mA; Transmitting power: 10mw; Modulation mode: ASK (AM). Encoding type: Learning. Transfers distance: 20~50m Controller (Receiver) : Input Power: AC85-240V 60HZ/50HZ Max current: 10 A RF Frequency: 433Mhz Working temperature:-30~+80 RF working mode: superheterodyne Receive sensitivity: >97dbm Transmitting distance: more than 50 m ( open space) Remote storage:10pcs Support remote type: Learning code 1527code Size: 47.4*42*22.8 (mm) Feature: 1. New mini round wireless panel switch(50mm*50mm*15mm) 2. 10A power: suitable for most equipment, safer to use 3. Mini body: can be directly installed in the switch bottom box, maintenance and installation are more convenient 4. Up to 50 meters remote range.The more obstacles, the shorter the distance, the more serious the signal loss. 5. After turning off the power, turn on the power again, the device status is off. How to get the signals Step 1: Press the learning button(on the Receiver) twice . Wait for 3 seconds; Step 2: Press one button on the remote control. Wait for 3 seconds. Succeed. How to clear the signals Only one step :Press the learning button(on the Receiver) 8 times. Note: The relay controller is RF Receivers,the wall switch is RF only.Wall switch itself cannot control lights on off.It needs to work with rf receiver together.