This Is a More Convenient Car Battery Disconnect Switch System That Can Remotely Master Kill Your Car ,A Proper Maintenance Will Extend And The Battery And Engine Life.Remote Operation,Comparing To Tranditional Battery Switch, This Remote Control Wireless Battery Switch Disconnect Allows You To Move The Trigger From Under The Hood To Your Hand So That You No Need To Frequently The Hood.Come With New Style Remote Control.You Can Even Control It In Your House,One Button Control On Your Dash For The Whole Car , Remote Receiver Standby Current Is Low (0.005A).Universal For DC 12V Trailer SUV VAN Small Truck Agricultural Vehicle Trike Auto Off Road. Integrated Design, Small Size, Avoid Cumbersome Wiring, Convenient Installation.Newly Upgraded Universal Installation Of Positive And Negative Electrodes, 230A Higher Working Current, 420A Instantaneous Current, It Is And More Active.Working : 12V 2.4WWorking Current: 250AInstantaneous Current: 450AFitment: Suitable For Any 12V Vehicle With Displacement Less Than 3.0Installation Steps:Remove The Negative Or Positive Power Line Of The Original VehicleFix The Original Vehicle Negative Or Positive Power Line To The RelayFix The Relay To The Negative Or Positive Pole Of The BatteryConnect The Red Wire To The Positive Pole Of Battery, Black Wire To The Negative Pole Of Batterycolor:BlackMaterial:plastic+metalPackage Contents:1 x Car Battery Isolator2 x Remote Control2 x Battery Clips1 set x Installation accessoriesOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.