What do the buttons 1 to 5 on the Manual Convection Heater’s the

Name: IVIGO Electric Heaters | Heating Innovations
Address: Nilüfer Organize Sanayi Bölgesi, Nilüfer Bulvarı No: 3 16145 Bursa - TÜRKİYE, Bursa, 16132, TR
Telephone: +902244111114
Price range: $$$

The buttons from 1 to 5 are used to set the room temperature. Heating performance may vary depending on where the unit is mounted (cold wall vs. warm wall) and the amount of air circulation.