RC SWITCH: Relay remote control switch is a learning code remote control switch(receiver). It is easy to match the transmitter(remote control), relay remote control for computer mainframe LONG DISTANCE RECEPTION: Strong which can pass through walls, floors and doors, control receiver from any place within a distance, very convenience to use PRODUCT FEATURE: The volume is small and the performance is stable and for reliable, high receive sensitivity, covers application ranging from like auto door , window, lifting equipment, entrance access, etc Working Voltage:DC4V 12V(DC4V 4.5V 5V 6V 7.4V 9V 12V) Standby Current:7 9mA Working Current:70 130mA Relay Standard:20A(14VDC 12A 120VAC 7A) Load:10A (better load is less than 7A) Learning Code: Learning Button to add Transmitter Working Mode: Momentary Toggle adjusted by Jumper Compatible: For computer mainframe Color:Black & White Material:plastic Package Contents: 1 x Receiver 2 x Remote Control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.