Dual Battery Isolator Relay Start On/Off 500A 12V/24V High Current Relay Intelligent Dual Battery Isolator Switch The main function of this product is to switch on, it can be used alone, it can be also connected to control to use, but this product does not include additional control relay, and if the controller is connected, it mainly used in the dual battery. _x000D_ _x000D_ Features: _x000D_ The surface is made of fine quality nylon material, stable structure and long service time. _x000D_ Built in pure copper coil, with strong conductivity. _x000D_ With a fixed frame, which is stable on working. _x000D_ Silver contact material, arc extinguishing resistance, low contact resistance and convenient installation. _x000D_ Help extend battery service time. _x000D_ _x000D_ Specifications: _x000D_ Rated power: 12Volt, 24Volt (optional) _x000D_ Rated current: 500A _x000D_ Coil power: 7.2W _x000D_ Color: black _x000D_ Material: metal _x000D_ Package size: 90 * 82 * 60mm / 3.5 * 3.2 * 2.4in _x000D_ Package weight: 257g / 9.1ounce _x000D_ _x000D_ Packing List: _x000D_ 1 * Relay _x000D_ _x000D_