125 Amp Voltage Sensitive Relay (VSR) The Voltage Sensitive Relay (VSR) allows two batteries to be charged at the same time. When the engine is started and the start battery reaches 13.7 volts, the VSR engages, allowing two battery banks (start and house) to be charged simultaneously. Cat. No. 710-125A Weight 2 lbs	$82.06
275 Amp Voltage Sensitive Relay (VSR) the 701-MDVS can be operated through a momentary button on the dash which will parallel the batteries for a preset time of 10 minutes. Cat. No. 701-MDVS Weight 2 lbs	$172.74
500 Amp Voltage Sensitive Relay (VSR) # Remote emergency parallel function: the 720-MDVS can be operated through a momentary button on the dash which will parallel the batteries for a preset time of 10 minutes. Cat. No. 720-MDVS Weight 3 lbs	$291.52
Dual Sense Voltage Sensitive Relay. 125Amp (VSR) Same as the 710-125A with the added feature of dual sensing. This allows the unit to sense the Voltage of both batteries that it is connected between. If either battery is receiving a charge the VSR will activate paralleling the two battery banks. Cat. No. 710-125A-DS Weight 2 lbs	$84.53
Single Engine, Two Battery Banks The 714-100A uses our dual sensing VSR (710-125A-DS). A welcome addition to the 701 selector switch it ensures you will always have a fully charged reserve battery. Cat. No. 714-100A Weight 2 lbs	$136.90