TH3 Universal Voltage Sensing Relay with OPT Time Delay 160AFeatures: Four Functions in One Flexible Device: Time Delay Relay, Low Voltage Disconnect, Automatic Charging Relay/Battery Isolator, or a Simple Relay/Solenoid Switch. Prevent auxiliary loads from draining batteries, maximize electrical system readiness by eliminating dead batteries, and reduce long-term electrical system maintenance costs. Ensure dual battery systems function safely and effectively by sharing charging power when available and isolating batteries when desired to ensure starting or communications ability. Reduce voltage drop from battery to loads by eliminating the need for long power cable runs to human access areas, also reducing costs. Specifications: Adjustable Time Delay: 0 sec - 15 hr Adjustable On/Off Voltage Trigger Adjustable Low Voltage Protection Priority Override: Key Signal or UV/OV table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Truck Freight: No Oversized: No