Honeywell TR21-WSU


    Wireless Temp Sensor

    TR21-WSU 1353524
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    Wireless Temp Sensor

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    Color White
    Mounting Wall Mount
    Operating Humidity Range (% RH) 5 to 95% RH, non-condensing
    Operating Temperature Range (F) 45 F to 99 F
    Operating Temperature Range (C) 7 C to 37 C
    Shipping Temperature Range (F) -40 F to +150 F
    Shipping Temperature Range (C) -40° to + 65.5°C
    Dimensions (in.) 4 11/16 in. high x 3 in. wide x 7/8 in. deep
    Dimensions (mm) 119 mm high x 77 mm wide x 29 mm deep
    Approvals, Underwriters Laboratories Inc UL94 plastic enclosure
    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-AXâ„¢ I/O Module
    Accuracy (C) (± 0.5 C) across 12 C to 30 C
    Accuracy (F) ± 1 F across 53.6 F to 86 F
    Radio Frequency 2.4 GHz (IEEE Std 802.15.4-2003 compliant)
    Open Range 3000 feet
    Typical Range 100 feet
    Battery Life 5 years with two AA Alkaline batteries (included)
    UPC 085267143103
    Weight 0.410000


    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

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