We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small white rectangular sensor with rounded corners and matte finish

GE Lighting

GE Lighting Cync Thermostat Room Temperature Sensor

SKU CH-3ZKQ-64QWW

A wireless room sensor that measures temperature and humidity, pairing with the Cync Smart Thermostat to balance comfort across multiple rooms via app schedules and voice control

  • ProtocolHomekit
  • TypeSmart Lighting
  • Real-time room comfort tracking with temperature and humidity sensing
  • Eliminate hot and cold spots by balancing temperature across multiple rooms
  • App-based scheduling shifts bedroom climate from cool at night to warm at morning
  • Voice control via Amazon Alexa and Google Assistant adjusts temperature hands-free
  • No hub required for remote access and control through the Cync app

Room Temperature Sensor

The GE Lighting Cync Room Temperature Sensor measures temperature and humidity in real time. It pairs with the Cync Smart Thermostat, which is sold separately, to extend climate monitoring to additional rooms. The sensor helps eliminate hot and cold spots by providing localized data for more consistent comfort throughout the home.

Check Thermostat Compatibility

Verify that you already own or plan to purchase the Cync Smart Thermostat, as the sensor cannot function independently. Ensure the Cync app is installed on a compatible smartphone for setup and scheduling. No separate hub or bridge is required for out-of-home control, but the thermostat must be connected to your home Wi-Fi network.

Adds Room-Level Climate Control

This sensor upgrades a single-zone thermostat setup by adding room-specific temperature and humidity readings. The jump is worth it when bedrooms, offices, or other spaces consistently feel warmer or cooler than the main thermostat location. It replaces guesswork with automated schedule adjustments based on actual conditions in the rooms you occupy most.

Highlights

  • Real-time room comfort tracking with temperature and humidity sensing
  • Eliminate hot and cold spots by balancing temperature across multiple rooms
  • App-based scheduling shifts bedroom climate from cool at night to warm at morning
  • Voice control via Amazon Alexa and Google Assistant adjusts temperature hands-free
  • No hub required for remote access and control through the Cync app

Specifications

ProtocolHomekit
TypeSmart Lighting

Questions about this item

What does the sensor package include and what must be purchased separately?

The package contains one Room Temperature Sensor; the Cync Smart Thermostat required for operation is sold separately.

Which version of the sensor should I choose for HomeKit and voice control?

The single model uses HomeKit protocol and works with Amazon Alexa and Google Assistant for voice commands.

How does the sensor improve comfort once paired with the thermostat?

It measures temperature and humidity in real time so the thermostat can adjust heating or cooling to eliminate hot and cold spots in that room.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.