How a Tiny $16 Gadget Made My Smart Thermostat So Much Smarter

If you have a smart thermostat but still find yourself too hot in one room and too cold in another, you are not alone. Most thermostats only measure the temperature right where they are installed—usually in a hallway or central spot. That single reading rarely reflects the true comfort level throughout the house.

I found an easy and inexpensive fix: the SwitchBot Meter Plus. It is a small thermometer and hygrometer that costs about sixteen dollars. I placed one in my bedroom to track the actual temperature and humidity far from the thermostat.

The device is battery-powered, has a clear screen, and connects to my phone and smart home apps through Matter, so it works seamlessly with my existing setup. With this added data, I can see how much the temperature differs from room to room. Even better, I set up a routine in SmartThings so my thermostat can adjust based on the bedroom’s conditions, not just the hallway.

Before this, getting that kind of multi-room temperature control would have required pricey add-ons or an expensive thermostat upgrade. For the cost of a few cups of coffee, this simple sensor does the job. It also keeps a log of temperature shifts over time, helping me understand airflow patterns and energy usage.

If you are looking for a low-cost way to make your smart thermostat genuinely smarter, the SwitchBot Meter Plus is worth considering. Sometimes the smallest upgrades make the biggest difference.