Description: Input/output voltage: 12V DC Remote control range: 100m-120m(328ft-393ft) Operating frequency: 315MHZ Remote Battery: 27amp,12VDC Receiver standby current: 4.5mA Wires Connection: Red wire: 12V DC positive power input. Yellow wire: 12V DC positive power output. Black wire x2: for ground or negative connection for both input power and output device. Features: -Relay contact operating load up to 8 amp max. -Compact size and mounting holes make it easier for installation. -Remotely turn on and off for any 12VDC devices such as computer lighting,accessories,auto lighting kits,landscaping lighting,boat lighting or other electronic applications. -Each remote controller has its own code, so it will not interfere with other similar remote controls. Package included: 2 x Receiver 4 x Remote controls Notes: 1. Do not connect directly to any 120/240VAC power without using a 12V AC/DC converter or adapter; 2. An inline fuse from your power supply is recommended to prevent any surge or short to this kit or your connected device. 3. Manual measuring, please allow 1 ~ 3mm error,thank you. 4. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.