No C Wire Options
Compare no-C-wire smart thermostats by power method: included adapters and extenders, battery power, and the line-voltage systems to rule out.
Schluter DHERT104/BW Smart control with voice assistant integration
Smart Thermostat for Mini-Split Heat Pumps & AC Makes mini-split smart
Tuya 16A Programmable temperature control
Honeywell Home RTH2SMC/N White WiFi + app connectivity for remote control