Honeywell TR20 Series Catalog Page
Temperature Sensors
TR20 Series Wireless Wall Sensors
TR21-WS and TR23-WS sensors are a family of wireless wall
modules. All models report space temperature; TR23 models come
with setpoint adjustment and override.
• Wall module to Receiver (point to point) wireless kits can replace any
standard wired sensor
• Wireless Kits (wall module and receiver) are pre bound at the factory
for quick installation
• Signal Strength LED built into the wall module
• Low battery indication
• Optional dip switches available to bind any wall module to any
receiver
• Approximate 5 year battery life with AA Alkaline (included), 7.5 year
with Lithium
• Locking screw discourages tampering and battery theft
Application Type: Wall Module
Color: White
Dimensions, Approximate: 4 11/16 in. high x 3 in. wide x 7/8 in. deep
(119 mm high x 77 mm wide x 22 mm deep)
Operating Temperature Range: 45 F to 99 F (7 C to 37 C)
Setpoint Temperature Range: 55 F to 85 F (13 C to 30 C)
Temperature Sensor Accuracy: ± 1 F across 53.6 F to 86 F
(± 0.5 C across 12 C to 30 C)
Shipping Temperature Range: -40 F to +150 F (-40 to + 65.5 C)
Operating Humidity Range (% RH): 5 to 95% RH, non-condensing
Mounting: Wall mount
Product Number Description Includes
TR21-WS/U TR21 wireless temperature sensor Honeywell logo
TR21-WSU/U TR21 Wireless Temp Sensor without Honeywell logo —
TR23-WS/U TR23 Wireless temperature sensor with Setpoint (F/C/Relative) and
TR23-WSU/U TR23 Wireless temperature sensor, with Setpoint (F/C/Relative) and
override button
override button, no Honeywell logo
Battery Life: 5 years with two AA Alkaline batteries (included)
7.5 years with two AA Lithium Batteries
Radio Frequency: 2.4 GHz (IEEE Std 802.15.4-2003 compliant)
Open Range: 3000 feet
Typical Range: 100 feet
Comments: not compatible with TB7220, TB8220,TB line voltage
thermostats, XL15s, W7762, W7763
Used With: Spyder, Excel 10 W7750, W7751, W7752, W7753, T7350,
T7351, TB8575, WEBs-AXô I/O Module
Approvals
Federal Communications Commission: FCC Part 15
Underwriters Laboratories, Inc: UL94 plastic enclosure
Selectable Setpoint dials in Fahrenheit, Celsius, and Relative
(- to +), and Override Button; Honeywell logo
Selectable Setpoint dials in Fahrenheit, Celsius, and Relative
(- to +), and Override Button
TR20 Series Wireless Wall Modules
The WRECVR receiver and TR21-WS, TR23-WS, TR21-WK, and
TR23-WK sensors are a family of wireless wall modules and
receivers.
• Wall module to Receiver (point to point) wireless kits can replace any
standard wired sensor
• Wireless Kits (wall module and receiver) are pre bound at the factory
for quick installation
• Signal Strength LED built into the wall module
• Low battery indication
• Optional dip switches available to bind any wall module to any
receiver
Application: Receiver
Application Type: Wireless Receiver
Dimensions, Approximate:
5 1/2 in. high x 3 13/64 in. wide x 2 13/64 in. deep
(140 mm high x 81 mm wide x 56 mm deep)
Operating Temperature Range: -40 to +150 F (-40 to + 65.5 C)
Shipping Temperature Range: -40 F to +150 F (-40 to + 65.5 C)
Operating Humidity Range (% RH): 5 to 95% RH, non-condensing
Product Number Comments Includes Used With Description
WRECVR/U — Honeywell Logo TR21-WS, TR23-WS Receiver used with wireless temperature sensors
WRECVRU/U no Honeywell logo — TR21-WSU, TR23-WSU Receiver used with wireless temperature sensors
476 customer.honeywell.com 70-6910
Receiver Voltage: 20-30 Vac/dc, 50/60Hz; 24 Vac typical
Radio Frequency: 2.4 GHz (IEEE Std 802.15.4-2003 compliant)
Open Range: 3000 feet
Typical Range: 100 feet
Approvals
Federal Communications Commission: FCC Part 15
Underwriters Laboratories, Inc: UL94-5VA
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