Honeywell Remote Sensor: Temp, Indoor, Honeywell, Junction Box, Hardwired
The HONEYWELL Remote Sensor: Temp (MPN TR21-A/U) is an indoor temperature sensor designed for junction box mounting with a hardwired electrical connection. It covers a temperature range of 45° to 99°F and includes a…
SKU 3G-OTH-70662
Also listed as: TR21AU · TR21 A U · TR21-A-U
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
The HONEYWELL Remote Sensor: Temp (MPN TR21-A/U) is an indoor temperature sensor designed for junction box mounting with a hardwired electrical connection. It covers a temperature range of 45° to 99°F and includes a cover. This sensor is compatible with Honeywell brand and series systems.
Frequently Asked Questions
What is the Honeywell TR21-A/U remote sensor used for?
The Honeywell TR21-A/U remote sensor is used for indoor temperature sensing in HVAC systems. It mounts to a junction box with a hardwired connection and is compatible with Honeywell control systems. Typical applications include commercial buildings, offices, and facilities requiring accurate temperature monitoring between 45° and 99°F.
What are the specifications of the Honeywell TR21-A/U remote sensor?
The Honeywell TR21-A/U is an indoor temperature sensor with a hardwired electrical connection and junction box mounting. It has a temperature range of 45° to 99°F, includes a cover, and is compatible with Honeywell brand and series systems. The manufacturer part number is TR21-A/U.
Where to buy the Honeywell TR21-A/U remote sensor worldwide?
3G Electric supplies the Honeywell TR21-A/U remote sensor worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source and deliver this Honeywell temperature sensor globally.
How to install the Honeywell TR21-A/U remote sensor?
Install the Honeywell TR21-A/U by mounting it to a standard junction box using the included cover. Connect the hardwired electrical leads per the Honeywell system wiring diagram. Ensure the sensor is placed indoors away from direct heat sources or drafts for accurate temperature readings between 45° and 99°F.
Used in
Common applications for HoneywellHoneywell Products
3G Electric supplies Honeywell temperature sensors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
