Features: 1: Unique circuit design, protect the lamp, improving light efficiency of fluorescent lamps. 2: No flash, no beeps, extend lamp life. 3: Starter voltage 100-280V, adapt temperature -30-40 degree. 4: high power factor, saving more than 35%. 5: needn't starter, compensating capacitor 6: visual stability, protect eyesight, easy to use, safe and reliable 7: long-term no-load, abnormal conditions 300V normal lighting, fireroof performance in line with national standards