A good water heater.
Cuts off when the water gets beyond the heat setting that you have specified.
Auto cuts off when there is no water supply.
Three temperature settings for very hot (scalding)
HOT (hot ! )
Warm ( just warm enough )
Copper bottle inside plastic casing with no on off switch.
A reset button (usefull)
Indicator lights that signify setting and power supply on/off.
Very easy to install. Do it yourself. Just two screws and a hang on bracket.
detailed user manual.
But the company has no coordination amongst their staff who are totally ignorant of each other.
Service centres are well appointed all over Bombay.
Home delivery is available.
Not very expensive.