Honeywell TR21

20 K ohm NTC non-linear Temperature Wall Module

Overview :

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.

Features :

Models available with user selectable setpoint 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: 0-10Vdc, 0-5 Vdc, 4-20ma selectable

Product Specifications :

Application: Wall Module Networked Sensor
Dimensions (in.): 4 13/16 in. high x 3 in. wide x 7/8 in. deep
Dimensions (mm): 122mm high x 76.5 mm wide x 22 mm deep
Used With: Spyder, Excel 600, 500, 100, 80 and Excel 10, 15 Series Controllers; Also used with the T7350 and TB8220 Thermostats
Approvals, Underwriters Laboratories Inc.: UL94 plastic enclosure
Operating Humidity Range (% RH): 5 to 95% RH, non-condensing
Setpoint Temperature Range (C): 13 C to 30 C
Setpoint Temperature Range (F): 55 F to 85 F
Operating Temperature Range (F): 45 F to 99 F
Operating Temperature Range (C): 7 C to 37 C
Shipping and Storage Temperature Range (F): -40 F to +150 F
Shipping and Storage Temperature Range (C): -40 C to +65 C