The TTHDF Series has been discontinued and has been replaced by the THDF Series.
The TTHDF flexible, multi-point duct averaging high limit thermostat incorporates several precision thermistor temperature sensors and provides a Form C relay output (NO/NC) with an adjustable setpoint. The probe is FT6 plenum rated cable and is available in various lengths (see ordering chart). All probes are constructed to provide excellent heat transfer and a fast response. Two enclosure styles are available.