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TG Series UL Wall & Duct

Refrigerant Sensor/Controller
Higher Reliability, Faster Installation, Superior Accuracy | Sense the Difference

TG UL Refrigerant Wall & Duct

Rugged ABS or Metal Enclosure options TG Metal LED or Solid Enclosure Available TG ABS Enclosure - Available with Tinted or Solid Lid Options Two sensing elements, buzzer, three color LEDs, and LCD for setup and calibration Gas shrouds secure over respective sensing elements for calibration ABS comes with conduit box adapter Buy American Act Certified

Analog and BACnet/Modbus protocol options
Rugged ABS or Metal enclosure options
Operates as a stand-alone sensor or local controller
Standard LCD with intuitive set-up menu
  • Integrated display, LED indicators, audible alarm
  • Menu selectable 0-5/10V, 1-5V and 4-20mA outputs (0-10V default)
  • BACnet supports BACnet MS/TP and Modbus RTU networks with auto-configuration for network baud rate, serial format, protocol type, and self-addressing
  • Dual outputs support daisy chain wiring to cost-effectively sense and control large areas
  • UL2034 recognized electrochemical CO sensing element
  • Warning indicators alert occupants when the element’s lifecycle is near the end for replacement
  • Installer-friendly circuit board makes through-the-back wiring simple
  • Test mode speeds up field commissioning for verifying warning indicators and relay functions
  • Push buttons and LCD to navigate setting parameters
  • UL Listed (UL61010-1) 
  • 7-year limited warranty on electronics; 2-year on elements


Senva TG Series refrigerant sensors are a great solution for refrigerant leak detection in many applications. It can be ordered as individually calibrated R134A or R410A sensors or any combination with CO or NO2 sensors. Buy pre-calibrated for R134A or R410A or factory calibrate to any refrigerant including R134A, R410A, R407C, R404A, R22, R123. 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 one unit of MS/TP & Modbus network communication. Standard features include network auto-configuration, a programmable fan relay, LED indicators, an integrated display, and an audible alarm.


  • Refrigerant leak detection in mechanical rooms
  • Pre-calibrated for R134A or R410A or factory calibrate to any refrigerant including R134A, R410A, R407C, R404A, R22, R123
  • Monitor multiple gases with one mounted unit
  • Alert occupants of elevated gas levels
  • Directly control exhaust fans
Product Price Quantity
$1,001.70 /


TGW-BAX-A TGUL, WALL, RS485, Ammonia
$1,502.55 /


$918.23 /


All prices shown are excluding tax unless otherwise specified.