Ecobee Premium 8 degree lower than sensor and thermometers nearby. Already plugged hole behind thermostat with expanding foam : r/ecobee
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Aubess Zigbee/WiFi Thermostat Hygrometer Sensor Support Alexa Voice Control Indoor Temperature Sensor for Pool Aquarium Winery - AliExpress
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Amazon.com: ThermoPro TP55 2 Pieces Digital Hygrometer Indoor Thermometer Humidity Gauge with Large Touchscreen and Backlight Temperature Humidity Monitor : Patio, Lawn & Garden
ecobee 5 - Smart Thermostat Pro with Voice Control- Rogers Supply