Self-powered 433Mhz light switch and receiver, control your lights or other devices from the comfort of your bed, couch, or chair instead of getting up. Easy to install and provides more flexibility in daily life.Features : Supporting a wall panel transmitter controls multiple RF433 receivers and vice versa.Just stick the switch anywhere you want with the double-sided adhesive tapes, no extra wires needed.Self-powered switch, no wiring and battery required, energy saving and convenience.Control your lights or other devices from the comfort of your bed, sofa or chair instead of getting up.Provides more flexibility to control devices in daily life.Apply to kinds of devices and suitable for home, office, hotel, etc. The RF433 Relay Receiver and Wall Panel Remote Transmitter Switch must be used together. Features: Color : White Material: Computer type: 1*1 Gang Switch & Receiver / 2*1 Gang Switch & 1*Receiver/1*2 Gang Switch & 2 * receiver (optional) Voltage: AC 110-230V 50/60Hz Maximum power: 1100W / 5A Item Size:Switch: 86 * 86 * 13 mm / 3.39 * 3.39 * 0.51 inch Receiver: 60*28*42mm/2.36*1.10*1.65in Switch: 45g / 1.59oz Receiver: 45g / 1.59oz 10.5 * 9.2 * 4.8cm / 4.13 * 3.62 * 1.89in 2 * switch 1 * receiver