433Mhz self-powered light switch and receiver, control your lights or other devices from the comfort of your bed, sofa or chair without getting out of bed. Easy to install and provide more flexibility in daily life. Feature: Just use double-sided tape to stick the switch anywhere you want, no extra wires needed. Self-powered switch, no wiring and batteries required, energy efficient and convenient. Control your lights or other devices by simply lying comfortably on your bed, couch or chair instead of stepping out of the bed. Provide more flexibility to control devices in daily life. Suitable for all kinds of household appliances, suitable for home, office, hotel, etc. WHZ01 Type: Simple remote control Operating voltage: 85-240V Operating Frequency: 433.92MHZ Total Charging Power: 10A Remote Distance: 20 meters