PC BASIC 4-18 W 220-240 V 50/60/0 Hz, not dimmable defined lamp warm start < 2 s switching cycles > 25,000 average life = 50,000 h (at ta max. and a failure rate of ≤ 0.2 % per 1,000 h) AC voltage range 198-264 V DC voltage range 176-264 V (for ignition input voltage ≥ 198 V DC) overvoltage protection 270 V AC, 360 h operating frequency ≥ 40 kHz