1)Double ignition pin,automatic electrical pulse ignition device
2)water-gas interlock valve device
3)over water & heat pressure protection device
4)Flame failure safety device adopted
5)Winter-summer switch option for gas saving
6)Anti-dry combustion protection device
7)An-freezing device
8)0.02-minute is iptional
9)20-minute timer is optional
10) Flue/force exhaust is optional
11)White coated,metallic white/silver color is optional
12)Energy saving and envirinmentally friendly