quartz heating element the high rate of radiation, radiation, high temperature, well integrated, high-intensity insulation quartz heating elementProduct ... thermal stability, heat evenly, Electric conversion efficiency, fast heating, thermal inertia of small, clean, easy to install, ... Technical Parameter:Voltage rating: 380V,220V,110V,55V(standard voltage: 220V)Heating power: 300-1000W 325W,400W,500W, ...