Create the ideal room temperature. The Smart Temperature and Humidity Room Sensor works only with the CYNC Smart Thermostat (sold separately) and measures temperature and humidity in real time. Set a schedule in the CYNC app and change your bedroom temperature from cool at bedtime to warm at sunrise. Add sensors to different rooms and create the preferred temperature in the rooms you are in during different times of day. Eliminate cold and hot spots in your home by making the temperature more consistent throughout the house.
Q: How does the sensor measure temperature and humidity?
A: The Cync Smart Room Temperature Sensor measures temperature and humidity in real time.
Q: Does the sensor require a constant power source?
A: The Cync Smart Room Temperature Sensor does not require a constant power source because it uses replaceable batteries.
Q: What is the purpose of the schedule feature in the Cync app?
A: The schedule feature in the Cync app allows you to set a schedule to change the temperature in your home throughout the day. You can set your bedroom temperature to be cool at bedtime and warm when you wake up.
Q: What type of battery does the sensor use?
A: This sensor uses a replaceable battery that is not rechargeable.

Create the ideal room temperature. The Smart Temperature and Humidity Room Sensor works only with the CYNC Smart Thermostat (sold separately) and measures temperature and humidity in real time. Set a schedule in the CYNC app and change your bedroom temperature from cool at bedtime to warm at sunrise. Add sensors to different rooms and create the preferred temperature in the rooms you are in during different times of day. Eliminate cold and hot spots in your home by making the temperature more consistent throughout the house.

Join the millions who love and trust ecobee products with our most affordable thermostat yet: Smart Thermostat Essential. It saves you up to 23%* on your energy bills and is so efficient that it pays for itself in just six months. You'll love how easy it is to use and control, and with effortless installation, you can set it and forget it. *Compared to a hold of 72°F

Get more control over your comfort with GE CYNC Smart Thermostat. Preset your ideal temperature around your schedule and adjust it away from home through the CYNC app. Turn up the heat or cool down the room from bed using your voice with your Google Home or Amazon Alexa device (sold separately). Set custom schedules in the CYNC app so you can cool the house down before bed and wake up to a warm room. The CYNC Smart Thermostat is compatible with most residential heating and cooling systems. Add CYNC Room Temperature Sensors (sold separately) and set your preferred temperature in the room you are in during different times of the day.

Amazon Smart Thermostat is ENERGY STAR certified. Easily switch your traditional thermostat and help reduce energy usage. For on-the-go comfort, let Alexa set the temperature, or set it yourself from anywhere with the Alexa app. Amazon Smart Thermostat is compatible with most 24V HVAC systems (like conventional force air, heat pump, radiant boilers, etc). It does not work with 110-240V HVAC systems (like electric baseboard heat). Smart Thermostats require a C-wire (most homes have one) or a C-wire adapter kit (sold separately). Guided installation instructions are included in the Alexa app, and will walk you through checking for a C-wire or options for powering your thermostat.
| Pros for Cync - Smart Room Temperature Sensor, Pairs with the Smart Thermostat (sold separately) - White | |||
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| Cons for Cync - Smart Room Temperature Sensor, Pairs with the Smart Thermostat (sold separately) - White | |||
| There were no cons for this product— | There were no cons for this product— |
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I have had no complaints from these sensors and they help me better understand how each floor's temperature changes from hour to hour.
Posted by Lucas
As advertised, helped to regulate the temperature in our kid's room that tended to be a bit colder than the rest of the house (turns out about 3 degrees cooler). The Cync app was a bit confusing for the set up but found a couple of YouTube videos that helped. Unit was much smaller than I thought, a little larger than a quarter. Something to note is that you'll need to set the sensor as the "main" sensor for your Cync to regulate temperature based on it's readings, which will then ignore temperatures read at the main unit. I'd love it if there were an option to work towards an average temperature.
Posted by Matt