Wall-mounted dual loop Controller and Sensor (X2 OS) / (US). US version to fit US standard electrical connection boxes.

The TRI2 is a programmable controller and sensor with communication capabilities. Each control loop may use 2 PI sequences and 2 binary stages.

Communication supports BACnet or MODBUS. There is also a Wi-Fi and Ethernet communication option available which supports Modbus TCP and BACnet IP. An embedded webserver provides a web interface to access the controller in order to change the connection settings and to operate the controller.

Flexible application configuration is made with a parameter-setting routine using the standard operation terminal.

Complete parameter sets may be copied by use of an accessory called AEC-PM2 or exchanged with a PC using an RS485-USB converter or Wi-Fi communication, the EasySet program and the configuration adapter called AEC-TRI-2.


  • Ventilation control
  • Tempearture control
  • Zone control
  • Air humidifier and dehumidifier


  • 2 universally configurable control loops
  • Functions for dehumidifying, set point shift and cascade control
  • Multiple auxiliary functions: heat-cool auto changeover, automatic enable, set point compensation
  • Free heating and cooling with economizer function based on enthalpy or temperature
  • Differential, averaging, min and max functions, enthalpy and dew point calculations
  • Transmitter function for inputs and set points
  • Built in humidity and temperature sensors (-TH type) or temperature sensor (-T type)
  • BACnet MS/TP or slave MODBUS communication over RS485 RTU or ASCII
  • BACnet IP or Modbus TCP communication over Wi-Fi (Wi-Fi interface required)
  • Webserver that supports TRI2 operation trough browser or mobile devices (Wi-Fi interface required)
  • 2 passive inputs (NTC, open contact), 1 analog input (VDC) and 2 analog outputs (VDC)
  • 2 relays with each a normally open contact to switch line voltage
  • 8 freely assigned alarm conditions, selectable state of outputs on alarm condition
  • Power Cap protected real-time clock with 48hr power backup
  • 7-day programmable schedules, with options including change of set points and direct position of manual outputs
  • Password protected programmable user and control parameters
  • Clone parameter set with plug-in memory AEC-PM2 - easily transport application parameters to multiple controllers
  • Exchange data with PC using the EasySet tool


 Product Name

 Product No.


 TRI2-FU-TH-221.202C   40-100226  Temperature- and humidity sensor  wall mounted controller
 with communication
 2 controll loops
 3 universal inputs
 2 relays
 2 analog outputs
 TRI2-FU-TH-221.202C-MOD  40-100227  Temperature- and humidity sensor
 with Modbus RTU or ASCII communication
 TRI2-FU-TH-221.202C-BAC  40-100228  Temperature- and humidity sensor
 with BACnet MS/TP communication
 TRI2-FU-TH-221.202C-WIM  40-100236  Temperature- and humidity sensor
 with Modbus TCP over Wi-Fi communication
 TRI2-FU-TH-221.202C-WIB  40-100255   Temperature- and humidity sensor 
 with BACnet IP over Wi-Fi communication
 AEC-TRI-2  40-500154  Configuration adapter with cable  See TRI2 install and TRI2 data 
 sheet for details



Temperature Sensors
Sensing elements or accessories for temperature sensors
AMM-UD-W Frame
Frame and mounting plate for rectangular connection box
AEC-PM2 - Memory
External memory for parameter sets for X2-series
AEC-USB - USB to RS-485 Converter Cable Kit
For programming X2-devices with EasySet tool
AEC-TRI-2- Connector for TRI2
For connecting TRI2 to AEC-USB


Operation Manual

Install Sheet

Application Notes