[Independent Control & Non-Interference] With 1 transmitter and 1 receiver, 2 sockets are controlled separately by the same remote switch and do not affect each other; allowing multiple outlet groups in your house without interference by adopting variable learning codes technology; no self-interference or interference with other existing RF remote systems [Key Chain Remote Control &100 FT Control Range] Convenient to store and carry the remote control plug socket with keychain; strong RF signal works through walls and doors up to 100 feet (30m), suitable for open areas such as bedrooms, living rooms, and garages without interfering with other household appliances [Energy Saving & Safety] With included 3V/CR2032 battery, long-life and energy-efficient, compact design won't block other outlets; ideal for Christmas lights, Vac, TVs, table lamps, bedside lamps, floor lamps, fans, and other household appliances; built-in safety door in each socket prevents children from inserting