Inkbird ITC-308 Digital Temperature Controller Thermostat with Dual Relay & Sensor Included$28.80 Buy it on Amazon
Temtop Portable CO2 Monitor - Indoor Air Quality, Temperature & Humidity Meter for Home, Office & School star_border star_border star_border star_border star_border (4) See the product on Tekdiscover$32.99 Buy it on Amazon
Google Nest Temperature Sensor 2nd Gen - Room Comfort & Scheduling for Nest Thermostats, Porcelain White star_border star_border star_border star_border star_border (3) See the product on Tekdiscover$27.00 Buy it on ebay
Govee WiFi Thermometer Hygrometer H5103 - Indoor Bluetooth Temp & Humidity Sensor with E-Ink Display & App Alerts star_border star_border star_border star_border star_border (3) See the product on Tekdiscover$37.95 Buy it on Amazon
