Hotop 24 Volt C Wire Adapter for Smart Thermostat, UL Listed 16.5ft Long Power Connector C Wire for All Versions of Smart Thermostat Compatible with Nest, Honeywell, Ecobee, Wyze, Sensi - - Amazon.com
LEVOIT Smart Thermostat for Home, WiFi Programmable Digital Thermostat, Works with Alexa and Smart Sensor, Energy Saving, Large Touch Screen, C-Wire Adapter Included, DIY Install, White - Walmart.com
Emerson Sensi Touch 7-day Programmable Wi-Fi Smart Thermostat with Touchscreen Color Display, C-wire Required ST75W - The Home Depot
Amazon.com: Car Thermostat AC Thermostat, Universal Air Conditioner A/C Thermostat, 85027‑9430 Automotive Air Conditioning Temperature Control Switch Car Accessory : Automotive
SmartWise WiFi smart thermostat, eWeLink app compatible, Type 'C' (dry contact), white - eWelink Store