Remote control for use with PRO-ELEC PL15025, PL15026 & PL15027. With self-learning function, any remote control and socket receiver can match after programming operation is completed It is easy to match a new transmitter or socket receiver if the original transmitter or socket receiver is broken or lost. A remote control can program one or more socket receivers, but one socket receiver can only be programmed and matched to a remote control A23 Battery supplied. Remote control range: 30m (line-of-sight). Frequency: 433.92MHz.