1. heater element long lifetime 2.temperature self-control 3.stable and safe 4.keep steady power 5.no thermostat required ptc heater element for fan heater and air condition Spectification1. No thermostat required,virtually unlimited lift ,self-control temperature2.safty due to self-control temperature3.PTC heater elements as its heating resources4.Dont burn when it contact with Paper ,matches,or ...