A: The power supply.

B: The two boil-dry protection switches, one on either side of the central black ring.

C: The power coupling. This fits into the baseplate when you place the kettle on it.

D: The thermostat. This is a little metal ring, half hidden by the switch cover.

E: The manual ON/OFF switch.

F: The indicator light.

G: The steam chamber. This heats the thermostat, which turns off the kettle automatically.