The Sewage water control panel provides total management of the holding tank system. It indicates the contents level in the tank and controls the pump out, either automatically or manually. The control panel has a security lock, which prevents the pump from being activated accidentally or without permission. Once the correct code is entered, the pump can be operated fully automatically or with manual override. If the “auto” function is selected, the pump will discharge the tank automatically once it is completely full. A switched outlet on the panel can also be connected to a relay in the toilet control circuit. Therefore, if the tank is full and remains full, it is possible to prevent the toilet from being flushed further. Features: • Heavy duty HOA switch - Hand-Off-Auto. • Control / Alarm fuse. • Red Alarm Beacon. • Laminated electrical schematic.