Dwyer Air Duct Temperature Transmitter 4.0" 4…20mA 24VDC BTT-D04 HVAC

The Series BTT Temperature Transmitters offer transmitter output signals with the same form and fit as our popular TE thermistor and RTD sensors for building HVAC applications. Thermowells are required when using immersion models in liquid applications. NIST CALIBRATION option is available.