Tank Liquid Level Controller with Fill and Empty Modes

The 12V liquid level controller is the ideal way to manage the level of water or other liquids in tanks, cisterns and basins automatically and safely. Designed for accuracy and reliability, it keeps the level within the limits you set at all times, preventing overflows and dry running of the pump.

Thanks to its dual operating mode, the system can work in either fill or empty mode. In fill mode the relay trips when the level falls below the minimum threshold, switching the pump on to restore the correct level. In empty mode, on the other hand, the relay trips when the maximum level is reached, allowing the liquid to be drained automatically.

The unit has two slide switches: the first lets you select the relay trip logic (activation above the threshold or below the set level), while the second lets you choose the type of level sensor used, that is N.O. (Normally Open) or N.C. (Normally Closed). That flexibility makes the controller suitable for a wide range of domestic, agricultural and industrial applications, such as irrigation systems, rainwater harvesting systems, service tanks and storage basins.

The relay output with C-N.C-N.O contacts handles loads of up to 230 Vac and 10A, so pumps, solenoid valves or other electrical devices can be connected directly. The 12V DC supply means safe operation and compatibility with low-voltage installations.

Compared with cheaper solutions, this controller offers greater configuration flexibility, a more reliable relay and simpler installation. The kit is supplied complete with assembly instructions, so installation is clear and straightforward even for those with only basic technical skills.

The kit is supplied complete with assembly instructions.