Here is another smart heater you can control with your smartphone and Alexa. The Dreo WH719S Wall Mounted Heater has 120-degrere vertical oscillation and 1500W output. You can use your smartphone to put this heater on a schedule. It has a temperature range of 41 to 95F.
This heater has an anti-freeze function to activate automatically when ambient temperature goes below 45F. The WH719S has overheated protection. It is made of flame retardant materials.