Honeywell TR40, TR42 Room Sensors and Displays

Honeywell TR40, TR42 Room Sensors and Displays

Basic information

Product Name: TR40 and TR42 Series Room Sensors and Displays

Design purpose: Used in conjunction with Trend IQX controllers, it has an integrated temperature sensor and some models also include relative humidity and/or carbon dioxide concentration sensors. TR42 has a monochrome backlit LCD display screen, configurable to display sensor readings, and allows users to control fan speed, occupancy status, and temperature set points.

Connection method: Up to 7 devices can be connected via two-wire Sylk ™  The bus is connected to the controller and simultaneously transmits data and power.

Physical property

Dimensions: 84mm (width) x 121mm (height) x 21mm (thickness)

characteristic:

Single power/data connection to the controller reduces wiring.

Equipped with temperature sensing function, some versions come with humidity and/or carbon dioxide sensing.

Can operate in Celsius or Fahrenheit.

Universal backplane and connections for easy upgrading from TR40 to TR42.

Unique to TR42: Backlit LCD display screen that can display temperature, humidity, carbon dioxide, fan status, occupancy status, and set points, etc; It has the functions of setting points, fan speed, and occupancy status coverage.

Function

Equipment type and sensor

This series includes two main types: TR40 room sensors and TR42 room displays. All models have integrated sensors for measuring ambient temperature, and some models also include sensors for measuring humidity and/or carbon dioxide levels:

The output value of the sensor can be read by the connected controller. TR42 also has a display screen that can show sensor values and is combined with various control buttons for viewing and changing system operations.

Display and buttons of TR42

Main display screen: In normal operation, the "home" screen can be configured to display various information, such as temperature, humidity, carbon dioxide values, current fan status, current occupancy status, etc. The display backlight will turn off after about 1 minute of button free operation and return to the home screen.

Function buttons: There are two function buttons, whose functions are indicated by labels (or icons) displayed above. On the home screen, there may be main functions such as "FAN", "OVERRIDE", "More", and secondary functions such as "HOME", "EDIT", "DONE", and "CANCEL" in the control screen and menu.

Up and down buttons: The functions are different in different display modes and configurations. On the home screen, the current setpoint can be raised or lowered (if the function is enabled), and pressing them at the same time will display the "More" menu; In editing mode, the display value can be adjusted or the available settings can be browsed step by step.

Fan status and control

The home screen can be configured to display the current fan status/speed, and the fan operation can be configured in multiple modes. If the fan control is enabled, the home screen will display the "FAN" function button, allowing users to overwrite the current fan status. After making changes through the up and down buttons, users can press "CANCEL" to keep the existing status or "DONE" to save the new status.

Occupation status and control

The home screen can be configured to display the current occupancy status. If the occupation coverage control is enabled, the home screen will display the "OVERRIDE" function button, allowing users to overwrite the occupation status. After changing through the up and down buttons, they can press "CANCEL" to keep the existing status or "DONE" to save the new status. After the coverage is enabled, it can be configured to automatically cancel after a preset time or a specific network bypass time, and users can also manually cancel it at any time.

Setpoint adjustment

If the set point adjustment is enabled, pressing the up and down buttons from the home screen allows the user to adjust the temperature set point between the preset high and low limits. The set point adjustment screen has two formats: numerical and graphic. It can be changed in increments of 1 ° or 0.5 ° by pressing the up and down buttons. Press "CANCEL" to keep the existing set point or "DONE" to save the new set point.

More "menu

Multiple additional display values and settings can be accessed through the "More" function button (if displayed) or by simultaneously pressing the up and down buttons. Users can browse using the up and down buttons. Menu items can be individually configured to display or hide, with editable items labeled as "EDIT" on the right function button. Once selected, you can use the up and down buttons to change the value. Press "CANCEL" to keep the current value or "DONE" to save the new value.