Honeywell · Sensor
TR21 Temperature Wall Module
Wired wall temperature sensor with a 20 kΩ non-linear element.
Will this work with my system?
Match your equipment to these requirements before ordering.
System requirements
- Sensor input: 20 kΩ non-linear
Limitations & exclusions
- The 20 kΩ TR21 is not electrically interchangeable with the 10 kΩ TR21-A.
Check before you buy
- Match the full TR21 model number and hardware revision to the manufacturer's equipment manual and accessory list.
- Confirm that the exact host-controller model supports this sensor signal or wireless protocol, then check placement and connection limits.
Manufacturer documentation (2)
Use these documents to compare your exact model and configuration.
Overview
The TR21 supplies a remote room-temperature signal to a compatible controller. Its 20 kΩ element differs from the 10 kΩ TR21-A averaging variant. Follow the connected controller’s sensor and averaging instructions.
Selection and installation
Use the linked manufacturer documentation for the exact equipment configuration, wiring and commissioning requirements. Accessories and controls must be matched by model and electrical characteristics.
Product details
- Manufacturer
- Honeywell Home
- SKU
- 365468
- Model / MPN
- TR21
- Condition
- New
- Lifecycle
- Current
Specifications
- Sensor characteristic
- 20 kΩ non-linear
- Measured variables
- Temperature
- Mounting methods
- Wall