Wall Modules
TR20 Series
TR20 Series are a family of direct-wired wall modules that are compatible with many Honeywell controllers.
Overview
Product Number
Image
SKU
Description
TR21-A-OC/U
WALL MODULE TEMPERATURE SENSOR
TR21-A-OL/U
10 K ohm NTC non-linear Temperature Wall Module for Averaging only, Special for Lennox
TR21-A-US/U
10K Temp Wall Module
TR21-A/U
Temperature Sensor, TR21-A, 20K ohm NTC, Non Linear
TR21-H-US/U
20K TempHumidity Wall Module,Lon Jack
TR21-H/U
Temperature Sensor, 20K ohm NTC Non-Linear, Lon Jack
TR21-J-US/U
20K Temp Wall Module w Lon Jack
TR21-J/U
Temperature Sensor, 20Kohm NTC Non-Linear, Lon Jack, Replaces T7770A2004
TR21-OC/U
Wall module with 20K ohm sensor
TR21-OL/U
20 K ohm NTC non-linear Temperature Wall Module, Special for Lennox
Image
SKU
Description
TR21-A-OC/U
WALL MODULE TEMPERATURE SENSOR
TR21-A-OL/U
10 K ohm NTC non-linear Temperature Wall Module for Averaging only, Special for Lennox
TR21-A-US/U
10K Temp Wall Module
TR21-A/U
Temperature Sensor, TR21-A, 20K ohm NTC, Non Linear
TR21-H-US/U
20K TempHumidity Wall Module,Lon Jack
TR21-H/U
Temperature Sensor, 20K ohm NTC Non-Linear, Lon Jack
TR21-J-US/U
20K Temp Wall Module w Lon Jack
TR21-J/U
Temperature Sensor, 20Kohm NTC Non-Linear, Lon Jack, Replaces T7770A2004
TR21-OC/U
Wall module with 20K ohm sensor
TR21-OL/U
20 K ohm NTC non-linear Temperature Wall Module, Special for Lennox
