Wireless Sensor HONEYWELL RedLINK 3.0 Indoor C7189R3002/U | Montreal, Laval, Longueuil, South Shore & North Shore

In stock
SKU: C7189R3002/U

The home office is too cool in the morning, the baby's room overheats in the afternoon, and the thermostat, for its part, is installed in the entryway.

Sensorproduct type
RedLINK900 MHz wireless
1 yearmanufacturer warranty
Get my installed price 514 316-2973

Quick facts

Model numberC7189R3002/U
ProgrammableNo
Wi-FiNo
Touch screenNo
ENERGY STARNo
Warranty1 year

The home office is too cool in the morning, the baby's room overheats in the afternoon, and the thermostat, for its part, is installed in the entryway. The Honeywell RedLINK 3.0 C7189R3002/U wireless indoor sensor lets the thermostat give priority to the room that matters at a given moment. Sold individually, it measures temperature, humidity and motion, then sends that information wirelessly to the thermostat.

Giving priority to the right room

The principle is room priority. Instead of regulating the house based only on where the thermostat is located, the system takes into account the room you choose. With motion detection, compatible thermostats can also take occupied rooms into account. Heating and cooling then follow the people rather than a hallway wall.

Communication is over RedLINK 3.0, with a range of up to 200 ft. The signal passes through most building materials, so the sensor can be placed on another floor or at the other end of the house in the vast majority of homes.

Compatibility

This sensor works with T10+ Pro Smart and ElitePRO S1200, S1100 and S1000 thermostats equipped with RedLINK 3.0. It does not replace the classic RedLINK sensors for VisionPRO 8000 or Prestige thermostats, which use a different generation of communication. If you already own a T10+ Pro, this sensor is the most direct way to add a reference room.

One sensor or a set of two

The C7189R3002/U is sold individually. It's the right choice to add a specific room to an existing system, or to complement a T10+ Pro kit that already includes a sensor. If you want to equip two rooms at once, the C7189R3010-2/U set combines two sensors of the same generation.

Quick installation, thoughtful settings

The sensor runs on two AAA alkaline batteries and needs no wiring. Installation is quick; what matters is choosing the location carefully and configuring the priority. During our visit, we:

  1. check that your thermostat is a T10+ Pro or a RedLINK 3.0 ElitePRO;
  2. choose with you the room to prioritize and the sensor location on an interior wall;
  3. pair the sensor with the thermostat;
  4. configure the priority and check the temperature, humidity and motion readings.

Place the sensor away from supply registers, windows, electronic devices and direct sun. For motion detection to be useful, it must see the area where occupants move around.

Energy savings and winter comfort

During the Québec winter, temperature differences between rooms are often pronounced: a room above the garage, a north-facing office or an upstairs bedroom can be several degrees colder than the rest of the house. By giving priority to the occupied room, the thermostat heats where it's useful instead of raising the setpoint for the whole house. The sensor also helps reduce hot and cold spots in multi-storey homes.

The humidity measurement is another advantage in the cold season. Heated air becomes dry, which affects comfort, hardwood floors and musical instruments. When the thermostat receives the humidity reading from the reference room, you get a more accurate picture of the actual conditions in the house, beyond temperature alone.

Maintenance

Replace the batteries when the thermostat tells you to. A light dusting of the housing is enough. If you rearrange the room, make sure the sensor isn't hidden behind furniture or a curtain.

Technical specifications

  • Type: wireless indoor sensor, sold individually
  • Measurements: temperature, humidity, motion
  • Communication: wireless RedLINK 3.0
  • Range: up to 200 ft; passes through most building materials
  • Power: 2 AAA alkaline batteries
  • Colour: white
  • Compatibility: ElitePRO S1200, S1100, S1000 and T10+ Pro Smart thermostats with RedLINK 3.0

AirGreen, residential comfort specialist

For more than 15 years, AirGreen has been installing HVAC systems and smart thermostats in the Montréal area. As a family business with an RBQ licence and a showroom in Boucherville, we configure each sensor so it truly serves your comfort.

For the purchase and installation of the Honeywell RedLINK 3.0 C7189R3002/U sensor, contact AirGreen. We serve Montréal, Laval, Longueuil, the North Shore and the South Shore.

01 · Key facts

Key facts: HONEYWELL RedLINK 3.0 Indoor C7189R3002/U

Four things to know, then its ID card in twelve answers. “—” means the manufacturer does not publish it.

TypeSensorHONEYWELL RedLINK 3.0 Indoor C7189R3002/U
ForElitePRO S1200, S1100, S1000 and T10+ Pro Smart…Compatibility
Power2 AAA alkaline batteriesPower supply
ConnectionWireless RedLINK 3.0Communication
02 · Head to head

The HONEYWELL RedLINK 3.0 Indoor C7189R3002/U or its closest sibling?

The most useful comparison: the model right next to it in our catalogue.

03 · The system

Products that go with the HONEYWELL RedLINK 3.0 Indoor C7189R3002/U

Parts named in its spec sheet that we sell and install.

04 · Installation

Installed and set up by our technicians, in five steps

What we do at your place, in order. The on-site estimate is free.

  1. 01CompatibilityExisting system and thermostat checked before ordering.
  2. 02MountingInstalled in the most representative spot.
  3. 03ConnectionWiring or wireless pairing, depending on the model.
  4. 04SettingsSet-up in the thermostat or the app.
  5. 05TestOperation checked with you.
05 · Specifications

HONEYWELL RedLINK 3.0 Indoor C7189R3002/U specifications

From the manufacturer’s sheet. Type a word: the list filters as you write.

GeneralTypewireless indoor sensor, sold individually
GeneralMeasurementstemperature, humidity, motion
ConnectivityCommunicationWireless RedLINK 3.0
GeneralRangeup to 200 ft; passes through most building materials
ElectricalPower supply2 AAA alkaline batteries
Format and contentsColourwhite
GeneralCompatibilityElitePRO S1200, S1100, S1000 and T10+ Pro Smart thermostats with RedLINK 3.0
06 · Questions

Frequently asked questions about the HONEYWELL RedLINK 3.0 Indoor C7189R3002/U

Short answers, no detours.

What does the HONEYWELL RedLINK 3.0 Indoor C7189R3002/U work with?

According to the manufacturer’s sheet: ElitePRO S1200, S1100, S1000 and T10+ Pro Smart thermostats with RedLINK 3.0.

What is the warranty?

1 year, per the manufacturer’s information.

Does AirGreen install it?

Yes. We sell and install this product in Montréal, Laval, Longueuil, the South Shore and the North Shore. The on-site estimate is free.

AirGreen · Montréal, Laval, Longueuil, South Shore, North Shore

Your thermostat, installed and set up by our technicians

We check your system and wiring, install the thermostat, connect it and program it with you. One visit, one installed price.

RBQ 5645-9605-01Ventilation, refrigeration and electrical
Free estimateon site, before any purchase
Quote in 24 hinstalled price, no surprises
Bouchervilleshowroom

Sources checked on October 5, 2026.

  • Manufacturer’s spec sheet for this product (summarized in the description and specifications above)
  • Natural Resources Canada, “Keeping the Heat In”, section 9 (modified September 29, 2025)
  • Hydro-Québec, electricity rates in effect April 1, 2026; Rate Flex D and Winter Credit Option pages (consulted October 5, 2026)
  • Énergir, smart thermostat grant (consulted October 5, 2026)

Savings shown are estimates; only Hydro-Québec and Énergir confirm a rate or a rebate.