The voltage guard, whose main role is to protect a battery against a deep discharge (or a bank of batteries = group), is to be connected in series between the positive pole of the bank of batteries and the uses.
You can preset a low battery voltage threshold via a combination of external microswitches.
As soon as this threshold is reached the voltage guard will offload the uses (100% of them without the possibility of making a selection except that some of them are connected directly to the batteries).
The voltage guard will automatically reconnect the uses as soon as the battery voltage increases (hysteresis).
The remote switch is used to manually control the opening of the Voltage guard.
When the remote switch is closed, the Voltage guard is open (no output voltage).
The remote LED is used to remotely view the operating state of the Voltage guard (copy of the LED present on the Voltage guard).