Smart Battery Isolators / Voltage Sensitive Relays have been specifically designed for a wide variety of 12V applications.

The Smart Battery Isolator units sense the input voltage generated and automatically connect/disconnect the appliance or circuit at pre-set voltages, eliminating the possibility of discharging the primary starting battery. Constructed with a weatherproof body (IP65) and durable silver tipped contacts, the VSR units also feature surge protection and a L.E.D indicator designed to alert the user when the unit is engaged.

Smart Battery Isolator units are ideal for dual battery set-ups as they enable two batteries to be charged at the same time and then isolates the batteries from each other when the vehicle is turned off, ensuring your starting battery is always charged & ready to go.

This is a single sense unit, in which the Smart Battery Isolator will only respond to voltage change at the red-dot terminal.

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Features:

- Designed for dual battery systems

- Suitable for most 12V charging systems

- Surge protection

- Easy to install

- Automatically sensing voltage level of main battery

- Cut In Voltage: 13.3V

- Cut Out Voltage: 12.8V

- CE Certified

Q & A Section:

Here I put some questions that are commonly asked by people interested in this product:

1. What are the fuse sizes I need for installing this product?

This really depends on the intended loading of your car circuit, which is different from vehicle to vehicle. However for many applications, especially for RV and 4WD, using 100A fuses with 6AWG cable should be enough for some of the most common applications (power fridge, lighting, radio, etc). We also sell Isolator and Fuses Combo Kit here: HTTPS://www.ebay.com/itm/301497663297