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

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

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)

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

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

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

Wifi Temperature Humidity sensor with Buzzer and Email / Text Alerts

ecobee EB-STATE6P-01 Smart Thermostat Premium

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