Product Description
. . . . . Johnson Controls T-3300-1 Pneumatic Thermostat, RA/DA, 60 to 150 Degree F - Proportional Action External Pneumatic Thermostat w/ Remote Mount - These thermostats have a remote-bulb temperature sensor that allows the control unit to be placed away from the sensor. The sensor is connected to the thermostat with a capillary tube. These thermostats sense the temperature of the air entering an HVAC system and are commonly mounted inside the casing of the system. These are dual-temperature thermostats, so users can determine different temperature setpoints to save energy when a building, such as a school or office, is unoccupied. When the supply pressure to the unit changes, the thermostat automatically switches between the setpoint temperatures. These pneumatic thermostats are powered by compressed air.. Johnson Controls. Johnson Controls. T-3300-1.