Platinum Duct Sensor, 3484 Ohms @ 75 Degrees PTC, 70-392 Degree Operating Temperature Range, 1/2" NPSC Straight Pipe Threads into Well, 95 % RH Non Condensing Operating Humidity Range, Not for Use on Chilled Water and Changeover Applications

Platinum Duct Sensor, 3484 Ohms @ 75 Degrees PTC, 20-225 Degree Operating Temperature Range, 1/2" NPSC Straight Pipe Threads into Well, 95 % RH Non Condensing Operating Humditiy Range, For Fluid Systems Requiring High Accuracy

Return Air Temperature Sensor, 1420 Ohms @ 75 Degrees, 2 3/4" Insertion Length, 60-90 Degree Operating Temperature Range