Features 1、For Dual Battery Car: The voltage sensitive relay has an automatic charging function, which is very suitable for dual battery vehicles to start. 2、Simple Installation: There are two installation methods, namely surface mounting or panel mounting, with flexible operation. 3、Automatic Charging: Two batteries can be charged, the main starting battery will start to charge the second battery from the alternator after it is fully charged. 4、ABS Shell: The shell is made of excellent ABS material, IP67 protection, good waterproof and durable. 5、Stable Operation: The voltage sensitive relay module has low power consumption, stable operation and strong practicability. Specification Item Type: Voltage Sensitive Relay Material: ABS Colour: Black Continuous Rated Current: 125A Rated Intermittent Current: 140A Power Consumption: 10mA (standby), 330mA (engagement), 0mA (storage mode) Waterproof Rating: IP67 Package List 1 x Voltage Sensitive Relay 1 x Bottom Plate 4 x Screws 1 x English User Manual