1.Cold plate coated panel,cold plate coated back cover.               

2.Summer& winter switch                             

3.Plastic knob                                                         

4.75°CTemperature controler                                        

5.Automatic ignition at low water pressure

6.Over water pressure protection

7.Anti-dry burning protection

8.High sensitive IC flame sensor

9.Flame failure safely device                                

10.Anti-frozen device

11.20 minute inbuilt timer