... socket has been build-in, it is convenient to power the testing lamp.• Two photo detector ports, one optical fiber port ... High Power LED, mini bulbs and other small lamps. The flux testing range is 0.001 to 1,999 lm.• IS ... CFL, LED bulb and tube, fluorescent lamp, CCFL. The flux testing range is 0.1 to 1,999,900 lm.• ... for HID lamps or other high power lamps. The flux testing range is 0.1 to 1,999,900 lm ...