Feature: 1. Support one wall panel transmitter controls multiples RF433 receivers and vice versa. 2. Just stick the switch anywhere you want with the double-sided tapes, no extra wires needed. 3. Self-powered switch, no wiring and battery required, energy saving and convenint. 4. Control your lamps or other appliances just stay in bed, couch, or chair with comfort instead of getting up. 5. Provides more flexibility to control appliances in daily life. 6. Apply to kinds of appliances and suitable for home, office, hotel, etc. Specification: 433Mhz self-powered light switch and receiver, control your lamps or other appliances just stay in bed, sofa, or chair with comfort instead of getting up. Easy to install and provides more flexibility in daily life. Features: Support one wall panel transmitter controls multiples RF433 receivers and vice versa. Just stick the switch anywhere you want with the double-sided tapes, no extra wires needed. Self-powered switch, no wiring and battery required, energy saving and convenint. Control your lamps or other appliances just stay in bed, couch, or chair with comfort instead of getting up. Provides more flexibility to control appliances in daily life. Apply to kinds of appliances and suitable for home, office, hotel, etc. Note: The RF433 relay receiver and the wall panel remote transmitter switch must be used together. Specifiations: Color: White Material: PC 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 * 13mm / 3.39 * 3.39 * 0.51in Receiver: 60 * 28 * 42mm / 2.36 * 1.10 * 1.65in Item Weight: Switch: 45g / 1.59oz Receiver: 45g / 1.59oz Package Size: 10.5 * 9.2 * 4.8cm / 4.13 * 3.62 * 1.89in Package List: 1 * Switch 1 * Receiver Package List: 1 * Switch 1 * Receiver