Honeywell Room Temp Sensor Tr21, Tr21a

US $336

  • Williamsburg, Virginia, United States
  • Oct 20th
Honeywell room temperature sensor for remote thermostat. I have one of each TR21 is a 20K ohm for single zone sensor and two TR21A, 10K ohm for averaging. Multiple sensors can be combined to sense temperature in a large room or zone with partition walls. 

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