The T-3610 Pneumatic Low Limit Thermostat is a low volume controller designed to maintain a minimum air temperature. Pneumatic feedback is incorporated into the controller design to provide an exact proportional relationship between the measured temperature and the control pressure.

Models are available for unit ventilator duct mounting applications with an 8 ft (244 cm) liquid filled averaging element or an 18 in. (46 cm) liquid filled rigid stem element. Both elements provide air temperature control with minimum variation in response to the average temperature sensed by the element.