Easy to UseThe remote light switch works straight out of the box, simply plug in and use; No programming or tools required, just remotely control hard-to-reach home appliances at the push of a button on the transmitter; Perfect for the elderly, pregnant women and those with limited mobility or back pain, no more bending down KeyChain Remote Control &100 FT Control RangeConvenient to hang up and store the remote control plug socket with keychain; Strong RF signal works through walls and doors up to 100 feet in open areas, without interfering with other home appliances or devices Energy SavingReady to go with included 3V/CR2032 battery, eliminating standby power and saving on your electric bills; Ideal for tuning ON/OFF indoor and outdoor lightings, Christmas lights, TVs, fans, vacuum cleaners, hard-to-reach sockets and other household appliances, this remote plug socket makes your life more convenient, safer, and energy efficient Learning Function& Re-programmableTransmit