HW TR21-A/U

Commercial Temperature Sensors

TR20 Series Wall Module

• The TR21, TR22, TR23, and TR24 are a family of direct-wired wall
  modules for use with Honeywell Excel 600, 500, 100, and 80 controllers;
  Excel 10 W7750, W7751A, W7752, and W7753 controllers;
  W7761 Controller; and Spyder Unitary Controllers
• Models available with user selectable set point adjustment
  dials in Fahrenheit, Celsius and Relative Scales
• Models available with occupied/unoccupied override
  (bypass) with LED
• Models available with 3-position (auto/0/1) or 5-position
  (auto/0/1/2/3 speed) fan switch
• LonWorks network jack on all models except the TR21 and TR21-A models
• Models available with on board humidity sensor, humidity output: 0 to 10VDC,
  0 to 5VDC, 4 to 20mA selectable
• Mounts on standard 2" x 4" junction box or on a 60mm diameter junction box
• Operating temperature range: 45° to 99°F (7° to 37°C)
• Set point temperature range: 55° to 85°F (13° to 30°C)
• UL Listed UL94 plastic enclosure, CE approved

(a) 20k Ohm NTC non-linear sensor
(b) 10k OHM Non-Linear, (2) 20k’s in parallel