Features: *Control the way you want it.One button on the switch can control an unlimited number of receivers that are in range. One receiver can respond to up to 8 transmitter buttons. *Low radiation.Less radiation than the smart phone and WIFI devices. *Reliable range.Unique code of each switch transmitter activates only the intended receiver(s). Multiple units may be used in the same home without interference. *Wide signal transmission range.Over 500 meters(1640 feet) in open space, over 40 meters(131 feet) indoor. *Saves energy.0W standby consumption for the switch, standard battery CR2032 can work long time. *Rolling code technology.With millions kinds of address code combination, make no repeated code. *Polycarbonate(PC) material.High stability and flexibility, flame-resistant and reliable. Transmitter Discounted at only: US$ 20.43 
