Generally, The safety tip-over switch of fan heaters is a micro switch installed at the bottom of device, relying on the weight of the device to press the switch to keep it open, but Some times it's insensitive. If the dumping occurs, the switch is not disconnected, there may be the risk of fire. New design is built in the device with the universal safety tip-over switch. If it tilts more than 45° in any direction, the switch will disconnect the power supply, stop the heating without fire and other dangers.