The REEFE Liquid Level Controller is ideal for maintaining water at predetermined levels in a tank. The controller receives inputs from a float switch, which is located in the water tank. By utilizing either 'normally open' or the 'normally closed' output contacts, the system can be used for either filling or emptying a tank. The 24VAC output can be directly connected to a solenoid valve for mains 'top up' systems or, alternatively, could be used to energise the contacts of a relay or contractor coils for pump or motor control.