PTC Heater 50w 12v AC/DC Automatic Thermostat Stand Corrugated Strip Small Space Description PTC ceramic air heater 50W 12V conductive typeRated Power: 50WRated Voltage: 12V AC / DC (Either AC or DC is available)Size: 9.3 * 31 cmPTC Chips Temperature: 220 degrees Celsius ( 10 degrees Celsius)heat material: PTC Thermistorheat methods: heat radiation by air flow Tips: Be careful when use it.This is a kind of Surface-Electrified PTC heater.When the heater is working, the aluminum parts are conductive. PTC Features & Benefits: Security: PTC products with constant fever, no open flame, heat conversion rate, subject to the supply voltage with minimal impact and other traditional heating elements can not match advantage, used in electric appliances in more and more popular in the R & D engineers.Energy saving: PTC product has an automatic energy-saving features, the heater when the ambient temperature is raised, the power will be gradually reduced, only 90% of rated power, 80%, or less.Long life: when in normal use PTC products is not damaged because of their own reasons, or even thousands of times repeatedly switch has no effect on its performance, a measure of its life is its degree of aging. General standards for power decay after 2000 hours is less than 10%. Package Includes: 1 xPTC Heater