This level monitor can be used for keeping a liquid level
constant or to indicate presence of any liquid.
The three different levels are indicated with LEDs.
Low, medium and high. At high level, a relay is activated.
The sensor consists of a PCB that can be modified
depending on the level difference between low and high
level that is required. 

• Easy
• Voltage 12–14 Vac or 16–18 Vdc, 100 mA
• Relay load 240 V 3 A  
• Size 104×60×29 mm

Varasto/lager: