







Price: $25.99
(as of Oct 11, 2025 00:37:57 UTC – Details)

The meross c wire adapter provides a reliable solution for homes lacking a C-Wire, supplying continuous power to your smart thermostat by connecting directly to your heating and cooling system. This c-wire adapter is compatible with 95% of HVAC systems and works seamlessly with Meross and most other thermostat brands, offering broad versatility. Before purchase, ensure your system has 4 wires (W/W1, Y/Y1, G, R/Rc) or 3 wires (Y/Y1, G, R/Rc) by scanning the QR code for compatibility. This c-wire adapter for smart thermostat makes installation quick and easy, ensuring your thermostat stays powered at all times.
Check before Purchase: This c wire adapter requires your HVAC(Heating,Ventilation,and Air Conditioning)system to have the following wires:4 wires:W/W1(or O/B),Y/Y1,G,and R/Rc or 3 wires:Y/Y1,G,and R/Rc. Please scan the QR code to check the compatibility before purchasing, ensuring the correct c-wire adapter for your system
What is a C-Wire: A C-Wire (Common Wire) supplies continuous power to Wi-Fi thermostats by connecting them to your heating and cooling system, eliminating the need for extensive rewiring in homes lacking a C wire
Wide Compatibility: Designed to integrate effortlessly with Meross thermostats as well as the majority of other thermostat brands, this adapter offers flexible and extensive compatibility, making it an ideal thermostat C wire adapter for a variety of systems
Quick and Easy DIY Installation: The package includes everything you need—an adapter, instructions, wiring stickers, double-sided tape, and more. With the step-by-step guide, you can easily install the C-wire power adapter in under 30 minutes, making it a hassle-free DIY installation
Customers say
Customers find the thermostat adapter works well, with one mentioning their smart thermostat powered up immediately. They appreciate the straightforward instructions. The build quality receives mixed feedback.
