Honeywell 12164 , Inc. 20K ohm NTC Temperature Sensor for Duct Discharge, 18 inch duct.

DUCT SENSOR REPLACES C7031C1031

18-inch duct sensor kit includes the following: (20K ohm NTC) thermistor sensor head, approximately 18 inches of 4-loop shielded wire lead, pull string for easy sensor removal, 18-inch probe with alligator clips for external probe connection, and B7825A3981AACG005 - Fusible Thermistor Probe Adapter, probe-end connector.

Honeywell Duct Sensor, 18 Inch, NTC Temperature Measurement, Locking Connector for 773 and S7000 Controllers.

A duct sensor is designed to monitor and control hot air discharge from a forced air register in heating and cooling systems. It is used in wall or floor registers with the probe end pointing toward heated space. The sensor measures temperature and transmits that information to the HVAC controller. The recommended operating range of this product is 5C to 30C (41F to 86F).

Honeywell's duct sensor is an 18 inch metal probe with a thin NTC thermistor strung between its ends. Installed in an airduct, the sensor senses temperature and triggers the furnace blower to start or stop. This sensor fits most older Lennox furnaces.

The Honeywell Discharge Duct Sensor is an NTC temperature sensor for use with Honeywell 20 kVAC Dehumidifiers.

Used to monitor and control duct discharge temperatures.

A 20'L red metal shaft, NTC thermistor sensor for use in the duct near the blower. Also reads temperature of heat exchanger.