[Versatile Battery Isolator] The isolator switch allows for selection between batteries for starting and charging or operating both in parallel, compatible with 6-32v systems. [high performance Dual Battery Switch] This switch can isolate or combine battery packs without interrupting power, ensuring optimal performance on marine boats and rvs. [Wide Application] This universal dual battery disconnect switch is suitable for marine boats, rvs, big trucks, and modified cars, offering versatility and reliability. Item Type:Battery Selector SwitchMaterial:plated, copperSwitch Position:4 (OFF-1-BOTH(1+2)-2) Battery Combo:Yes Working Voltage:6-32V DC Continuous Rating:300A Instantaneous Current at Startup: 400A Function: Make before break contact design allows switching between battery packs without interrupting power Application: Suitable for Marine, Boat, RV, big truck Color: Red Material: plastic Package Contents: 1 x Dual Battery Selector Switch Only the above package content, other products are not included. Note: Light reflection 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.