Specifically designed for a wide variety of 12V applications. The VSR automatically senses then either connects or disconnects an appliance or circuit at the pre-set unit voltage. Ideal for dual battery systems and helps eliminate the possibility of discharging the primary starting battery. Features surge protection, LED indicator, silver tipped contacts and IP65 weather proof body. Includes stainless steel hardware. Specifications; Cut-In: 13.3V, Cut-Out: 12.7V (5 second delay), 160A at 12V for 60 seconds, 140A at 12V continuous load maximum.