1.       Compulsive exhaust digital constant temperaure water heater;

2.       The temperature set at will, automatic constant temperature convenient operation.

3.       Protection device against unexpected flameout;

4.       Burned air expelled compulsively, the air indoors much fresher and safer;

5.       Protection device against creepage;

6.       Protection device against over wind pressure or flue snarl-up;

7.       Start up under low water pressure even 0.02Mpa. Protection function against;

8.       Protection device against frozen.