12V Split Charge Relay with red LED indicator. Allows split charging of a secondary battery without discharging the primary/ start battery. Commonly used with van mounted Window Cleaning systems. Dual sense allows the unit to sense the voltage of both batteries that it is connected between. If either battery is receiving a charge the VSR (Volt Sensitive Relay) will activate. This allows the charging of the second battery from an external battery charger or second charging source. 140 AMP Voltage Sensitive Relay 5 Second Delay Simple Installation Avoids Discharging of Primary Battery L 68mm x W 49mm x H 68mm. CE approved Specifications Continuous Rating: 12VDC/140 amps Sense: Dual Engage Voltage: 13.7VDC Disengage Voltage: 12.8VDC Ignition Protected: UL1107 Stud: M6 Ground: Negative, 0.5M/18 AWG wire Weight: 0.2Kg Dimensions: 68mm x 68mm x 49mm Mounting Screws: 4.8 x 50mm and 3.5 x 13mm Fitting Guide