It is a 12VDC 4-channel Latch/Momentary switchable remote-control relay switch. The kit comes with a controller with 4 outputs that can be controlled individually by key-chain style RM handset. On the RM handset, there is a manual switch to set the RM modes C either Latch or Momentary. It is an On/Off remote relay switch that can be used in conjunction with any 12VDC applications such as lighting, landscaping, automobile or PC modding etc. Features Water resistant and water proof design. Easy to install and configure. Dimension - 1.5 x 4 x 5 in. Item Weight - 0.5 lbs. ApplicationsSecurity Systems, Electronic Anchor, Boat Applications, Remote Gates, Light Controls, Window Curtain Automation, 12VDC Motors, Remote Blinds, Garage Doors, Irrigation Pumps, Sprinklers, PC Modding, Traffic Signals etc.