Honeywell Home C7089R1013/U C7089R1013 RedLINK® Outdoor Temperature and Humidity Sensor

The C7089R1013 is a RedLINK wireless outdoor temperature and humidity sensor from Resideo (Honeywell Home).

RedLINK is the wireless link Resideo uses between a thermostat and the rest of the system. Instead of pulling a wire from the equipment to every sensor and module, the devices are enrolled to the thermostat or to a wireless adapter and talk to it directly — which is what makes a sensor in a room with no thermostat wire, or an outdoor sensor with no conduit to the attic, a realistic job rather than a demolition project.

Enrolment is the step that decides whether it works. Each device has to be added to the system at the thermostat or the adapter; a RedLINK device that has not been enrolled is inert, and one enrolled to the wrong system stays enrolled until it is cleared.

Outdoor temperature is what lets a thermostat do anything smarter than react. It sets the balance point where a heat pump hands over to auxiliary heat, it drives outdoor reset on hydronic equipment, and it is what puts an honest outside reading on the thermostat screen instead of one pulled off the internet for the nearest airport.

Rated -40 °F to 140 °F and 0 to 100% RH, condensing — it is meant to be mounted outside and left there. Put it on a north wall, out of the sun; a sensor baking in afternoon light reports a temperature the house never sees.

• Brand: Resideo (Honeywell Home)
• Manufacturer Part #: C7089R1013/U
• Type: RedLINK outdoor temperature and humidity sensor
• Operating temperature: -40 °F to 140 °F
• Operating humidity: 0 to 100% RH, condensing
• Mounting: Vertical mounting with supplied bracket and mounting hardware
• UPC: 085267331845
• Category: RedLINK Accessories