1)【 Add Wall Light Switches without Re-Wiring 】 Simple installation; Wired between the power and lighting fixtures; No in-wall wiring needed; Expand your lighting system freely and won't affect the existing system 2)【 Detachable Wall Switch and Compact Receiver Kit 】 RF remote control wall mountable switch mounts anywhere;Compact receiver switch kit fits limited space like electrical junction box, switch box 3)【 50 meters RF Wireless Remote Range 】 Strong RF signal works through walls and doors without any interference; does not require line of sight while using; up to 50 meters range in open areas; certified to EMC/FCC. 4)【 Programmable and Expandable 】 Available to add more wall switches, receiver kits, extra handheld remotes, outlets and light sockets (Same Model Only); transmitter wall switch and receiver have been pre-programmed for immediate use, Max. 4 switches can work with 1 receiver, 1 switch can work with Max. 4 receivers. 5)【 Widely Used with Multiple Applian…