Best Smart Temperature Sensor

ecobee3 Lite Smart Thermostat - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant - Energy Star Certified - DIY Install

Govee WiFi Digital Thermometer Hygrometer, Smart Indoor Humidity Meter Temperature Sensor with App Notification, 2 Years Free Data Storage, Remote Monitor for Room Greenhouse Incubator Wine Cellar

Govee WiFi Digital Hygrometer Thermometer 3 Pack, Indoor Outdoor Smart Gateway Room Temperature Humidity Sensor, Wireless Temp Gauge with App Alert, for Home, Greenhouse(not Support 5G WiFi)

ecobee Smart Sensor 2 Pack - Comfort, Security, Energy Savings - Smart Home - Compatible with ecobee Smart Thermostats for Home

Smart Wireless Temperature/Humidity Sensor Wide Range (-22 to 158 Degrees) for Freezer Fridge Monitoring Pet Cage/Tank Monitoring Smartphone Alerts, Works with Alexa IFTTT, 2 Pack - Hub Included

meross Smart Temperature Controller Heating and Cooling, Digital Thermostat Outlet Works with Apple Home, Alexa, Google Home, for Heater Reptiles Greenhouse Aquatium RV Home Brew,15A 1800W

ecobee EB-STATE6P-01 Smart Thermostat Premium

Wifi Temperature Humidity sensor with Buzzer and Email / Text Alerts

Google Nest Temperature Sensor - Nest Thermostat Sensor - Nest Sensor That Works with Nest Learning Thermostat and Nest Thermostat E - Smart Home, White

Google Nest Learning Smart Thermostat - 3rd Generation - Stainless Steel T3007ES Bundle with Google Nest Temperature Sensor 3 Pack T5001SF + elago Wall Plate Upgraded Wall Mount Cover - Matte White