The Model PTS-D3 Precision Duct Thermister Sensor provides remote duct temperature sensing for the Proliphix NT20e and NT120e/h Network Thermostats. The active sensing element is a highly stable precision thermistor material accurate to within +/- .36oF (0.2oC). The sensing element is sealed with a thermally conductive compound in a versatile 9" (22.8cm) long 304 stainless steel tube attached to a 4" electrical strap. The slots in the mounting bracket form mounting ears for direct duct mounting and standard electrical boxes. The grommet on the tube fitting seals a 9/16" (1.43 cm) insertion hole. FEATURES Sensitive tip for precise measurements Waterproof probe 304 Stainless steel 9" probe Five-year warranty +/- .36oF (0.2oC) accuracy 25ft (7.37m) lead APPLICATION The PTS-D3 is designed for direct mounting on sheet metal duct systems. Where conduit is required, the duct sensor has a universal nylon mounting connector which adapts to a ½" knockout in a standard handibox. The nylon fitting has a ½" NPT female conduit fitting. The duct temperature sensor is waterproof and is point sensitive and comes with a 9" insertion depth. SPECIFICATIONS Sensing Element Thermistor (thermal resistor) Accuracy +/- .36oF (0.2oC) Temp Range -30oF to 160oF (34 to 71oC) Temp Response NTC -Thermistor Thermistor Stability 0.24oF (0.13oC) over 5 years Connection 25ft (7.37m) 24 AWG pigtails Mounting Directly to duct, wall or customer supplied back box, no adapters needed for standard boxes.