The transmitter design is a key chain fob that can be taken everywhere you go for added convenience This new series of redesigned wireless rf light controls feature compact receivers that have a manual onoff button with a pleasing green backlit led status indicator and grounded receptacles to allow control of more devicesFeatures. Works up to 100 away through walls and around corners. Automatic pairing allows grouping of multiple devices no more specific channels to worry about. Simply plug desired appliance or lamp into the receiver and then plug the receiver into any powered outlet. Receiver features a manual onoff with a green backlit led indicator to show device status. The remote transmitter fob sends a signal to turn lights or appliances on or off. Remote fob transmitter uses one 3v battery included that lasts about a year with normal useSpecifications. Color White. Material Steel. Dimension 24 x 16 x 28. Current 15A. Power 1875W