The WLD300 is special for one level or more levels monitoring in the oil tank or water tank or river and other applications. when the water level or oil level in the tank higher than or lower than the related float ball, the high level or middle or low or related sensor will trigger and output an alarm signal. It is an industrial class, photoelectric isolation, high reliability, low-power consumption, high stability and high precision digital detector.

The WLD300 is used widely as a front-end detector of an alarm system for level monitoring in oil tank, water tank, and river level monitoring.
 

The WL3200 with fire retardant shell, and flange installation types makes it easy to install in fields.