Honeywell RedLINK Thermostats

RedLINK is the wireless technology Honeywell Home uses to connect a thermostat to equipment interface modules, wireless sensors and other accessories without running new wire. This collection lists the Honeywell RedLINK thermostats and thermostat kits we carry.

You will find VisionPRO 8000 thermostats with RedLINK, including the TH8110R1008, the 7-day programmable TH8320R1003 and the TH8321R1001 with IAQ contacts, plus the YTH8321R1002 kit with an internet gateway. Prestige 2-Wire IAQ models include the THX9421R5021WW thermostat and YTHX9421 kits bundled with sensors or an internet gateway. The RedLINK 3.0 kits pair a T10+ thermostat with an EIM 3.0 equipment interface module, and one version adds an OAS 3.0 outdoor air sensor.

Before mixing components, check that your existing sensors and modules use the same RedLINK generation as the thermostat you choose. Wireless sensors, equipment interface modules and other add-ons are in RedLINK Accessories, other connected models are under Smart Thermostats, and wallplates and adapters are in Thermostat Accessories.