The 200 AMP Isolator is the perfect solution when adding a secondary battery to your audio system. It allows the second battery to be fully dedicated to the sound 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. All of this will that your battery will be isolated with confidence! Mobile Audio Relay and Battery Isolator Great for isolating a second batter making it dedicated to the stereo system 200 Amps at Continuous Handling 300 Amps Surge Handling Switching : 10-16 VDC Draws Less Than 1 Amp When On Item: 200A Relay Voltage:DC24V Colour: 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.