PowerGuard continually monitors the state of engine batteries as they discharge. At a pre-determined level PowerGuard will provide a warning (via an LED on its dash mounted reset switch) and then after a selected time if the batteries have not recovered, will automatically disconnect the batteries from their loads. This prevents further discharge and ensures enough energy is left in the batteries to be able to restart the engine.
Power is reconnected either by starting the engine or pressing the dash reset switch. PowerGuard can also be used as a battery master switch remotely operated from an on/off switch on the dash negating
the need to buy two separate devices.