Specification: Item Type: Remote Battery Disconnect Switch Material: ABS+Copper+Silver Battery Model: CR2016 ( one battery for each remote switch, shipped with built in battery ) Battery Capacity: 75mAh Working Voltage: DC11-15V Rated Current: 250A Starting Current: 450A ( less than ten seconds ) Standby Current: 0.005A Switch Size: Approx. 45 x 45 x 45mm / 1.77 x 1.77 x 1.77m Instructions: Working Voltage: The 12V and 24V remote control power off switches cannot be mixed. 12V is selected for one battery vehicle, and the corresponding voltage switch shall be selected for most cars, small trucks, agricultural vehicles etc. Switching Power Consumption: The power consumption of this switch is 5mA in standby and about 3W in operation Package List: 2 x Remote Control 1 x Main Power Switch 1 x  Cable Lug   2 x Battery Clip 1 x Copper Connectors Note: 1: Install a relay switch and turn it on, which will increase the battery power consumption. When leaving the vehicle, use the remote control to turn off the main power supply in time, so as to avoid power loss caused by too long power consumption and failure to start. 2: Because cutting off the power supply of the whole vehicle will cause the alarm and on board computer to fail to work due to power failure, the vehicle can only be used after power failure. 3: When driving, do not disconnect the relay switch to prevent the generator voltage from rising and damaging the automobile electrical appliances.