The liquid level Float Switch is a popular technique in water level applications

Features
* All plastic (polypropylene) mini float switch
* 48 inch leads (22 gauge wire) offer great project flexibility
* Includes nut and sealing o-ring
* Fully submersible

Great for:
* aquarium top-off applications
* humidification/de-humidification applications
* hydroponics projects
* water features
* air conditioning drain pan applications

Specifications:
* max wattage: 70W. Beware spiking voltage from pumps rated less
* max switching voltage: 300VAC
* max temperature: 90 degrees C / 194 degrees F
* normally closed:
- The wires complete a circuit when the float is down. You can reverse the operation by removing the clip, turning the float upside down and replacing the clip.