This Voltage sensitive relay (VSR) is great for a vehicle with a second battery When the battery voltage drops below (Engine off)12.8V. The VSR Will disconnect the Start Battery so it will not discharge so you will always be able to start your vehicle even when you’ve used up all of your second or third battery and when you start the engine again it will start to charge all batteries A very intelligent piece of kit for worry free motoring

A voltage sensitive relay (VSR) is the best way to ensure you can always get your dual-battery vehicle started.

Surface or panel mount options provides flexibility when installing.

It has a solid glass fiber reinforced nylon shell.

Specifications:

Condition: 100% Brand New

Material: Nylon

Color: Black

Size: 7 * 7 * 6cm / 2.8 * 2.8 * 2.4in

Nominal Voltage: DC 12V

Combine / Open Voltage: DC 13.3V / 12.8V

Continuous Current Rating: 125A

Intermittent Current Rating: 140A

Power Consumption: 10mA (Standby) / 330mA (Engage) / 0mA (Storage Mode)

Certification: CE IP67

Comes complete in a box with

1 * Voltage Sensitive Relay (VSR)

4 * Screws

1 * fitting instruction Manual