Button Room temperature sensor with wallplate for APOGEE Terminal Equipment Controller (TEC) with 1K ohm platinum RTD (375 Alpha) element. Stainless steel finish.

This Q-Series Duct Relative Humidity Sensor monitors and transmits changes in humidity to the building control system. This unit is especially suited for applications where precise, stable humidity...

For recalibrating.

Room sensor for CO2 concentrations, temperature and relative humidity with a CO2 measuring range over 0 to 2000 parts per million (PPM). This unit delivers a 0 to 10 Volt DC signal with temperature...

Liquid Differential Pressure Sensor, 0-25 PSI, 4-20mA output for hydronic HVAC piping application.