SPECTEC Model 4052 Programmable Speed Switch is a factory programmable microprocessor-based speed/flow switch that provides a relay output for controlling devices based on the input frequency from a passive VRS(Mag) speed sensor or low drag digital RF flow sensor, or an active DigiSpec Mag sensor, or Hall effect speed sensors, as well as, proximity or other sensors with digital square wave output.

It can be factory programmed to meet a specific frequency range. When used with a flow meter the 4052 becomes a Flow Switch.

Parameter Name	Parameter Value
Options	programmable
Applications	speed sensor