General description The 12V 140 Amp Voltage Sensitive Relay (VSR) is designed for dual battery systems, allowing for automatic charging and isolation of batteries. This relay ensures that your primary battery remains charged while providing power to accessories from a secondary battery when the engine is off, keeping your vehicle ready to start at all times. Technical specifications Operating Voltage: 12V Current Rating: 140A Cut-off Voltage: 13.3V and 12.8V Size: 7x7x5.3 cm Material: Plastic + Aluminum Measurement Error: +/- 1-3 cm Compatibility and accessories This battery isolator is compatible with various vehicles and applications, including: UTVs Boats Campers Trucks Caravans Other vehicles Installation The package includes all necessary components for a complete installation, making it easy to set up the relay in your vehicle. Usage This dual battery isolator allows you to: Run accessories from a separate battery when the engine is off Keep the primary battery charged Ensure