Select controller and appropriate size sensor bracket for your filter, each sold separately. The patented FilterPulse™ technology shines a light beam through an HVAC air filter and receives the light that passes through the filter. When a new clean filter is inserted, the filter reset is pressed. An initial light measurement is made calibrating the sensor with the starting base-point of the new filter. Later measurements are compared with the initial measurement. The alarm will activate at the user-set trip point indicating the filter needs to be replaced. This calculation method allows the FilterPulse™ to accurately detect the proper replacement threshold on nearly all varieties and brands of filters. Plus, unlike other products, the FilterPulse™ accurately operates regardless of the HVAC blower speed or pressure fluctuations in the system.

Parameter Name	Parameter Value
Function	monitoring
Type/technology	electric, optical electric optical
Product applications	industrial, for pharmaceutical applications, for HVAC installations, for clean rooms, for airport, power plant, dust, for filters industrial for pharmaceutical applications for HVAC installations for clean rooms for airport power plant dust for filters
Other characteristics	non-contact with LED indicator