Features

Enhance your HVAC system's flexibility with the PRO1 R251S Wired Indoor Remote Sensor. It allows temperature sensing to be relocated away from the thermostat for more accurate comfort control. Compatible with PRO1 thermostat models T755S, T855iSH, and T855SH, this compact remote thermostat sensor gives installers the freedom to place it in optimal locations—even in sight-sensitive spaces—without homeowner objection. It supports averaging with up to 16 total sensors, helping balance temperatures across larger or multi-room zones. The R251S is priced affordably, making it easy to scale for any residential or light commercial job without stretching the budget. Whether you’re upgrading a single zone or expanding across an entire home, this thermostat external sensor is the smart choice for both comfort and value. Ideal for new installs and retrofits alike, this indoor remote thermostat sensor is built with PRO1’s trusted reliability.

HARDWIRED INDOOR REMOTE SENSOR: Made for HVAC comfort control, this sensor relocates temperature sensing away from the thermostat to improve system accuracy, especially in challenging airflow or heat gain zones
COMPACT SIZE FOR DISCREET INSTALLATION: Small design makes it easy to place sensors where needed without drawing attention or causing aesthetic concerns for the homeowner
COST-EFFECTIVE SOLUTION FOR MULTI-SENSOR JOBS: Priced to allow use of multiple sensors per job site—up to 16 for averaging—without compromising budget or performance
COMPATIBLE WITH MULTIPLE THERMOSTAT MODELS: Seamlessly integrates with PRO1 thermostat models T755S, T855iSH, and T855SH for flexible deployment in residential or light commercial applications
MORE BALANCED TEMPERATURE CONTROL: Improves comfort throughout the zone by smoothing out hot or cold spots through multi-point sensor input

Shipping Note: Shipping to Alaska, Hawaii, PO Boxes, and APO addresses is not available for this item

Warranty: 90 Day Woot Limited Warranty

Specs

Specifications
Brand Name	PRO1 IAQ
Ean	0095247201228
Model Number	R251S
Specific Uses For Product	HVAC comfort control, temperature sensing relocation, multi-room zone balancing, residential heating and cooling, light commercial heating and cooling
Style	Compact
UNSPSC Code	41112209
UPC	095247201228

In the Box:

(1) PRO1 R251S Wired Indoor Remote Sensor

Specs

Specifications

Brand Name

PRO1 IAQ

Ean

0095247201228

Model Number

R251S

Specific Uses For Product

HVAC comfort control, temperature sensing relocation, multi-room zone balancing, residential heating and cooling, light commercial heating and cooling

Style

Compact

UNSPSC Code

41112209

UPC

095247201228

In the Box:

(1) PRO1 R251S Wired Indoor Remote Sensor

PRO1 R251S Wired Indoor Remote Sensor for T755S, T855iSH, and T855SH Thermostats, Compact Wired Thermostat Sensor, Use up to 16 Sensors for Averaging

Features

Specs

Specs

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