Description: Multi-function remote control switch, small size, learning type, working mode jog, self-locking, interlocking, switchable, can load large power appliances. Eliminate wiring troubles, no need to dig the wall to install the province, save time, effort, and save money. Adopt digital codec technology, no directionality, remote control by wall, full range of two-way control, no interference with each other. Powered by 12V 27A battery, safe and reliable. Flexible and convenient: it can be installed in the 86 switch box, or it can be double-sided on the wall, bedside, bookcase, door and other convenient positions. Specification: Working voltage: 12V27A battery Working frequency: 433 MHZ Remote control distance: 20 meters (no interference) Wall distance: 10 meters or so Ambient temperature: –20? —80? Material: Plastic + electronic components Remote control size: approx. 8.6 x 8.6 x 1.1cm/3.4 x 3.4 x 0.43inch Receiver Size: Approx. 9.4 x 4.5 x 2.7cm/3.7 x 1.8 x 1.06inch Package Includes: 1 Piece Wall Panel Remote Control 1 Piece Relay Receiver Module Note: This controller can learn 16 different coding remote controls such as fixed code/learning code. If overstep, remove the first learned remote-control cleanup method in turn