Features 1. Self-powered: The transmitter has a built-in kinetic energy generation module, no battery, no wiring required, can be placed at will, and is easy to install. 2. Safer: No power supply required, safer and waterproof, the panel can be operated with wet hands, without the risk of electric shock. 3. No installation restrictions: It can be fixed on the wall or moved to other locations at will, and can be placed on a table, bed, living room, etc. 4. Long-distance operation: Ultra-long remote control distance, high sensitivity, outdoor receiving distance of 200m, indoor and outdoor receiving distance of 30m. 5. Durable: Compact design, made of high-strength ABS material, the panel is not easy to yellow, discolor, wear-resistant, and can be pressed about 200,000 times. Specifications Item Type: Wireless Optical Switch Material: ABS Working Type: Reset Working Frequency: 433MHz Number of Presses: 200,000 Times Transmitting Distance: Approx. 200,000 Times Approx. 200 m / 656 ft (outside) 50 m / 164 ft (indoor) Power Mode: Kinetic Self-Generation Communication Mode: OK FDK Panel Size: Approx. 12 x 7 cm / 4.72 x 2.76 inches Packing List 1 x Switch 2 x Sticker