Specification: Item Type: Remote battery disconnect switch Material: ABS, copper, silver Battery Model: CR2016 x 1 (built in) Battery Capacity: 75mAh Working Voltage: DC11-15V Rated Current: 120A-200A Starting Current: 200A-360A (less than ten seconds) Standby Current: 0.005A Switch Size: Approx. 45 x 45 x 45mm/1.77 x1.77 x1.77in Package List: 2 x Remote Control 1 x Main Power Switch 1 x Copper Terminal 2 x Battery Clip 1 x Copper Adapter How to Use: Installation Method: 1:The red wire is connected to the positive pole of the battery, and the black wire is connected to the negative pole of the battery. This is the power supply for the switch, and the remote control switch consumes very little power. 2:The two large terminals on the relay switch are the main switch. One incoming line and one outgoing line, in no particular order, play the role of on off. 3:When controlling the on off of the negative pole, a large terminal is connected to the negative pole of the battery, and a large terminal is connected to the negative pole of the battery (the positive pole is also the same). hello, guys, thank you for visiting my store.There are so many useful and cheap item in our store. we will be ready to reply you ASAP.