The TEMP-STACK Sensor is a digital stack temperature sensor designed for sensing heat within the air ducting of your equipment. Temperature accuracy: ±0.5° C from -10° C to 85° C. The TEMP-STACK Sensor is attached to 25’ of cable with an RJ-12 connector. The sensor is mounted in the tip of a 3/8” diameter chrome tube. The supplied mounting hardware consists of a base and a compression fitting to allow the sensor to be secured at variable depths. This allows the installer to locate the sensor up to 9 1/2” from the equipment wall, well within the airflow being monitored.