The liquid level controller is designed for automatic monitoring and control of liquid levels in tanks and containers using probe sensors.
The device operates with three control levels - low, medium, and high. When the high-level probes are immersed in the liquid, the high-level indicator LED (D7) lights up, activating relay P1 and turning on LED D10. In this state, the medium-level probes are also immersed.
The relay remains activated even after the high-level probes are no longer in contact with the liquid. When the liquid level drops below the medium-level probes, the low-level indicator LED (D9) turns on, causing relay P1 to switch off.
The controller provides reliable indication and stable operation for liquid level control in various applications.

Warning!!!
This kit must not be used with flammable liquids.
The controller does not operate correctly with probes or wires longer than 3 meters.

Technical Specifications:
Function: liquid level monitoring and control.
Control levels: low, medium, high.
Load control: mechanical relay P1.
Indication:
- low level,
- medium level,
- high level,
- relay ON.
Supply voltage: 10 - 16V DC.
Current consumption: up to 100 mA.
PCB dimensions: 68 x 68 mm.

This product is a DIY assembly kit.
It is also available as a fully assembled module - Product code 1572 (separate product).