Multi-Point Shower Safe  System
1-Dry Heating Protection 
Stop working when extremely low or no water flow goes into the water heater.
 
2-Flameout Protection
The magnetic valve cuts off gas supply when the induction needle can not sense any flame.
 
3-Auto Power Off After
20min Working
Reduce the risk of lack-of-oxygen in case the user takes a shower in the bathroom for too long.