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TG Series UL Wall & Duct

Dual Toxic Gas CO/NO2 Sensor/Controller
Higher Reliability, Faster Installation, Superior Accuracy | Sense the Difference


Rugged ABS or Metal Enclosure options NEW! TG-REM kit - mount CO and NO2 at different heights; same functionality as a single device TG ABS Enclosure - Available with Tinted or Solid Lid Options Two sensing elements, buzzer, three color LEDs, and LCD for setup and calibration Through-back hole allows for streamlined installation in a junction box ABS version comes with handy conduit box adapter Buy American Act Certified

Individual UL2075 Recognized CO, NO2, or dual sensing elements in one enclosure.
BACnet/Modbus or Analog ouput models.
Operates as a sensor or stand-alone controller.
Standard LCD with intuitive set up menu.

  • NEW! UL2075 Recognized CO and NO2 elements.
  • Supports BACnet MS/TP and Modbus RTU networks.
  • Integrated display, LED indicators, audible alarm.
  • Analog menu selectable 0-5/10V, 1-5V and 4-20mA outputs (0-10V default).
  • Analog version supports daisy chain wiring to cost-effectively sense and control large areas.
  • Sensor self-test feature for added safety and reliability.
  • Temperature compensated elements for maximum accuracy.
  • UL listed and LADBS Approved (City of LA).
  • Warning indicators alert occupants when element’s lifecycle is near end for replacement.
  • Field replaceable sensing elements; 7 year life expectancy on CO and NO2 elements.
  • Complies with IMC 404.2.1, UMC 403.7.2, and NFPA 720.
  • NEW! TG-REM kit allows for dual mounting heights with a single power source and output connection.
    • Great for local codes requiring CO and NO2 at different heights
    • Plug-and-play; provided with pre-cut CAT-5 cable
    • Single power source, single location for RS-485/analog/relay connections
    • Single BACnet device; reduce devices/points on your network
    • Through-the-back wiring makes junction-box-mounting easy
    • No programming necessary


Senva UL Listed TG Series sensors can be ordered as individual CO or NO2 sensors or as a combination of CO&NO2 sensors in a shared enclosure. CO and NO2 sensor components are listed to UL2075. The analog output model features 2 outputs that support daisy chain wiring - multiple sensors may be used in a parallel sequence (0-10V) for cost effective coverage of large areas. The unit can also act as a stand alone controller, utilizing the relay for exhaust fan operation or the output for direct control of a VFD. The BACnet/Modbus model supports BACnet MS/TP & Modbus network communication in one unit. Standard features include network auto-configuration, a programmable fan relay, LED indicators, integrated display and audible alarm.


  • Ensure adequate air flow in occupied spaces.
  • Ideal for parking lot garages.
  • Monitor multiple toxic gases with one mounted unit.
  • Alert occupants of elevated gas levels.
  • Directly control exhaust fans.
Product Price Quantity
$423.00 /


$423.00 /


All prices shown are excluding tax unless otherwise specified.