The 200 AMP Isolator is the perfect solution when adding a secondary battery to your o system. It allows the second battery to be fully dedicated to the stereo system and does not create a voltage drop like common isolators tend to do. The isolator will draw less than 1 amp when your vehicle is powered on. This ensures your battery will be isolated with confidence. Mobile o Relay and Battery Isolator, great for isolating a second battery, making it dedicated to the stereo system. 200 Amps at continuous power handling, 300 Amps surge power handling. Switching power: 10-16V. Draws less than 1 Amp when on. Item: 200A Relay. Voltage: DC 24V. Color: silver. Material: metal. Package Contents: 1 x relay. Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.