1. OKES ballasts are more stable, quick start, long-life, high power factor, no noice and effective energy saving.
2. Design for variou fluorescent lamps, inset install ceiling lamps, spot lights etc.
MK-4B-2: 1. FOR T8, one ballast for two lamp. 2. Volage: 220V 50Hz. 3. Power: 18W, 36W. 4. PF: 0.98, BF: 0.95. 5. Temp: less than 50 degree. 6. Voltage: 220V 50Hz. 7. Power: 18W, 36W. 8. Power input factor: 0.98.
Lower temperature.