Thermostat - allows you to set the temperature output of the heater so that you get the right level of warmth and use as little electricity as possible.

Safety cut out - all of the heaters and radiators have this these days, if the heater over-heats for whatever reason the power is cut so avoid any damage.

Tilt cut off - normally standard on halogen and fan heaters which turns them off if they are knocked over, this prevents the carpet from being burnt.

Heat settings - this controls the output so for example on a 1.5kW heater there might be 3 settings. Setting one will give a 500w output, setting two 1kW and setting three 1.5kW. This allows you to have better control over the temperature in the room and the cost of running the heater.