How would you like a fully automated and customizable home HVAC system? You can trust MRCOOL to deliver exactly what you need precisely when you need it with the MST04 Smart Thermostat. This Wi-Fi-capable unit installs quickly and easily to replace your old wall thermostat ...How would you like a fully automated and customizable home HVAC system? You can trust MRCOOL to deliver exactly what you need precisely when you need it with the MST04 Smart Thermostat. This Wi-Fi-capable unit installs quickly and easily to replace your old wall thermostat.
Touchscreen controls make it easy to change your settings while in your home, but that isn't all the MST04 can do. Connect this thermostat to Alexa, Google, Siri, or the MRCOOL smartphone app to completely revolutionize how you heat and cool your home.