2 Pack Top Post Battery Master Disconnect Switch Cut Shut Off Marine Battery Isolator Disconnect Switch 12V for Car Auto Truck Boat RVs Motorcycle with Green Knob

Battery Master Disconnect Switch is made from Zinc Alloy Copper Plating, Longer product life than ordinary copper, features superior performance, Copper has the best electrical conductivity to reduce voltage distortion., Easy to install and simple to use: loose is power off, tightening can be conductive. Battery operated switch to engage power just hand tighten the green knob, Slightly loosen the green knob to disconnect all power., Suitable for most top post terminals (15-17 mm cone battery negative post), use under the condition of 12V voltage, 125 A, knob type., This extremely handy cut-off switch enables you to quickly and easily disconnect your automobile battery for safety, servicing, or storage., Purpose: used for the battery to isolate and secure the electrical system, eliminate any power draw from the battery when the vehicle or boat is not in use, and disconnect the battery safely.