<br>Double safety protection: Overheat Protection and Tip-Over Protection. When the heaters indoor portable electric is overheated the thermostat will automatically turn off the heater and will turn it back on when the temperature drops below the thermostat setting. This portable heaters for indoor use also have 3 modes: high heater/low heater/cool air<br><br> <b>As a space heater for office its measures: 6" X 7.5" x 9.2", very suitable for personal use as a personal heater or office heater<br>