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.

Relay Receiver Board Parameter:

• Working voltage : AC 85V~240V
• Quiescent Current : <5MA
• Max current : 10A
• Max load: 2200W
• Receiver Body Size : 47*42*27mm
• RF frequency : 433MHz
• Pin : L / N
• Working temperature : -10~+70 Celsius
• Receiving Sensitivity : >97dbm
• Amount of storage remote controls : 20 pieces
• Support encoding : EV1527 Leaning code
• RF Operating mode : ASK superheterodyne wireless reception
• Receiving range : Open space is more than 100 meters
• Remote operating mode : Toggle Mode / Latched Mode

Features:

• Easy connect and multi control one
• The receiver is easy to install, Multi switches can control different receivers or one receivers

• Strong signal and Long distance control

• Control the light in the room, even outside the room, The receiver can be remotely controlled up to 1000 meters through a wireless switch and the signal can be controlled through the wall

Wide range of application:

• Products can be used in homes, farms, factories, offices, laboratories, supermarkets, and so on
• Remote control Water pump / Fan / Lamp / LED light / bulb / ventilation device/ Exhaust system, Kettle, water heaters / Signal transmission / Electrical equipment/Factory Home Office Ventilation Pump LED Light

Smart Home, Feel free to use it together