Electric kettle with two thermostats.
The 28 Ohm resistor is the heater.
The switch near the AC source stands for the main thermostat which cuts at 100 degrees Celsius.
The switch at the far right is the second thermostat cuts at 90 degrees Celsius.
The SPDT switch chooses between both temperatures.
The left lamp is on while heating.
The right lamp is on when the water is ready at 90 degrees.
