1. With timing mode to meet different needs
2. European gas proportional adjustment, accurate temperature
3. Anti-electromagnetic interference device, to be more stable
4. Using oxygen-free copper heat exchanger, to have higher heating efficiency
5. Coaxial flue smoke exhaust, to be more safe
6. 36 kinds of safety protection function, to be more safe and reliable
7. Three-level antifreeze function, safe operation at low temperature
8. Low water pressure to start, regardless of low water pressure and floor height