The Sencor SFH 7021BK hot air radiator is excellent for use in offices and small apartments. It has a long-life new DC motor. 2 protection levels tel: overheating protection, built-in safety switch. Thanks to its design, it can be installed almost anywhere.The safety switch built into the hot air fan automatically shuts off the unit if the unit is accidentally overturned. After setting the device to the normal position, the device switches on again.The device has a built-in safety switch that automatically shuts off the device if the device overheats. If this happens, unplug the power cord from the wall outlet. Make sure the inlet or outlet openings are not blocked or clogged. Before switching on the appliance again, wait for the appliance to cool down completely to switch off the thermal switch.