Privacy Statement
Skip Ribbon Commands
Skip to main content
  • Product Info
  • Literature


The TR40 and TR42 are 2-wire, non-polarity sensitive, Sylk bus communicating wall modules, which communicate with Spyder® and some ComfortPoint™ programmable controllers. The TR40 and TR42 are simple LDC temperature wall modules with basic setpoint, override, and fan options, and are designed for a broad range of applications. Models are available that include humidity and CO2 sensing.


  • Two wire, polarity insensitive Sylk provides both power and communication to the device.
  • Models available with display (TR42) or without display (TR40).
  • Models available with or without built in humidity or CO2 sensors.
  • TR42 models have configurable options using the Niagara tool for fan speeds and override.
  • TR42 models have the ability for tenant to change between °F and °C
  • TR42 models have the ability to provide tenant either a relative warmer cooler setpoint adjustment or absolute temperature setpoint adjustment

Product Specifications

Temperature, Humidity, CO2 Sensor Wall Module
Dimensions (in.)
3-1/4 in wide x 4-3/4 in high x 7/8 in. deep
Used With
All Spyder Controllers (not compatible with Stryker controllers)
Configurable with Niagara Workbench
Item Type
Vertical Mount
Approvals, Underwriters Laboratories Inc.
UL94-V0 plastic enclosure
Operating Humidity Range (% RH)
5 to 95% RH, non-condensing
Setpoint Temperature Range (C)
Default range is 10 C to 35 C; configurable for other ranges
Setpoint Temperature Range (F)
Default range is 55 F to 85 F; configurable for other range
Switch Positions (Fan)
Operating Temperature Range (F)
32 F to 110 F
Operating Temperature Range (C)
0 C to 43 C
Shipping and Storage Temperature Range (F)
-40 F to +150 F
Shipping and Storage Temperature Range (C)
-40 C to +65.5 C
Approvals, Federal Communications Commission
FCC Part 15
Approvals, CE
Network Communications
Two-wire Sylk
Accuracy (F)
±0.36 F at 77 F
Accuracy (C)
±0.2 C at 25 C
±3% RH
Password Protection
There is no literature attached to this product, please try another material search. If you believe that there should be literature for this product, please contact Customer Care for website support.