Wide Signal Transmission Range: The effective range between transmitter and receiver is approximately 0~40m indoors and approximately 400m outdoors. Wireless Switch: Weight: 35g Size: 7.5*4.8*1.5cm Easy to carry. Long Lifespan: Switch button, lifespan up to 600 thousand times, 400 thousand times for the receiver, CR2032 button lithium battery can work for 6~8 years, working temperature: -40~70℃. Easy Installation: No wiring on the switch, uses tape for installation, no need to tear down walls, works with receiver (Note: The receiver is wired between the lamp and the power supply.) One switch can control an unlimited number of receivers within range. One receiver can respond to 8 switch fields. Wireless switch compatible with all lamps, halogen, incandescent, fluorescent, LED lighting, fans and other electrical switching devices, etc. Built-in power: 1000W. CE, FCC, CQC, ROHS certified product