... 4. Does not produce heat, does not contain UV 5. High Luminous efficiency, low power consumption 6. Long life (> 25000Hr) 7 ... -150 60-120 30-70 Voltage: 110V Operation Voltage Range: 30~250V Optimum Operation Voltage: 60~110V Frequency: 400Hz Operation Frequency Range: 50~3000Hz Optimum ... in the automobile, motor instrumentation, defense, aerospace, a varies of high-tech digital instrumentation