"Sense temperature of air streams in ducts and plenums. Sensors include a junction box with gasket to prevent leakage and vibration noise.","These point-sensing thermometers feature a fast- responding aluminum sensing tip.","Custom options include a NEMA 4 weatherproof connection box and an all stainless steel probe.","Outside air sensors are designed to mount on condui t outside your building. They include an elbow type enclosure and sun shield."