3 Seconds Fast Heating & PTC HeatingThe outdoor patio heater features advanced PTC ceramic heating elements that provide 3S fast heating, generate more heat and save more energy than heaters normal. Always warm you and your family in this winter. Intelligent Thermostat Control SystemBuilt with overheat protection and automatic changeover switch. The heater automatically stops when the temperature reaches 90, and the heater automatically restarts when the temperature drops to 75. The fan heater will be more convenient for your life with more safety protection. 3 Heat Settings HeatingBathroom fan heater provides 3 heating levels (1800W/1000W) and fan mode. cool air (15W), which not only could send warm air to you in winter, but also can keep you cool in summer. 120 high/low adjustment and wireless design LightWith 120 up and down adjustment design, our heater can not only warm your hands, but also warm your feet. Our fan heater will also work at night and won't interfere with your sleep thanks to the lightless design. Low noise and energy savingOur electric heater is energy efficient and quieter than conventional heaters. traditional, with a working noise as low as 47 DB. Automatically adjusts the heating mode according to the ambient temperature - this electric heater saves your electricity bill while keeping you comfortable.