Duct sensor The DS-600 is a thermistor based duct sensor designed to work with Thermolec’s thermostats and electronic controllers to modulate the heater’s capacity according to the heat required. In most cases the DS-600 is used with Thermolec’s 0-10 VDC Room Thermostat to allow...

A pressure differential switch is used to prevent a heater from operating if there is no airflow across the heating elements. The switch is provided with a pitot tube to be installed into the duct, which makes it sensitive to velocity pressure as well as to static pressure. In ap...

The D21-PSSR electronic controller has been designed to be a compact solution to take full advantage of our patented Air-Flow Sensor which modulates the heater’s capacity according to the quantity of air flowing through the heater by responding to the radiant heat of the elements...