1.Flame Failure Protection.
2.Over Heat Protection.
3.Anti-dry Burning Protection.
4.Pressure Relief Protection.
Optional:
Oxygen Depletion Protection.
Anti-downdraught Protection.
Low Water Pressure Start Up.
Winter-Summer Switch.
20 Minutes Timer.
Temperature Display
Low Battery Indication
Hot/Cold ON/OFF Water Switch.
Single/Double Sloenoid Valves