12/24V 500A High Current Relay Intelligent Dual Battery Isolator Switch for Camping Car Starting Relay Auto StartUp Contactor Car Power Switch This product functions as a switch and can be used independently or connected to a control system. It does not include an additional control relay. When connected to a controller, it is primarily used in dual battery systems. Features: - Made of high-quality nylon material for stable structure and long service life - Built-in pure copper coil for excellent conductivity - Equipped with a fixed frame for stable operation - Silver contact material provides arc resistance, low contact resistance, and easy installation - Helps extend battery service life Specifications: - Rated voltage: 12V, 24V (optional) - Rated current: 500A - Coil power: 7.2W - Color: black - Material: metal - Package size: 90 x 82 x 60mm / 3.5 x 3.2 x 2.4in - Package weight: 257g / 9.1oz Package List: 1 x Relay