... 2. Technical Parameters: - VOLT: 100, 110, 120, 220, 230, 240V - WATT: 50-2500W - HZ: 50-60 HZ - Electricity saving ratio: 30 ... temperature endured: 1100 Celsius degree - Color temperature: 900-1500 Celsius degree - Surface temperature: 500-900 Celsius degree - Continuous servicing hour: 6,000 ... of customers on operating voltage, power, size, length etc. Carbon Heater Tube/Lamp