Liquid level sensor, also called fluid sensor or float switch, usually has two parts: a stem and a float. The stem is stationary and attaches to the top or bottom of a tank. One or more reed switches ...

The Lumen Maintenance Photocell (LMPC) is a sensor that’s attached to a wall that reads the amount of light in an area, and relays the information to a control unit that can make adjustments according ...