To measure the performance of various electrical signals and harmonic devices to measure electrical signals or Power Quality Analyzer (Fluke Model 43B), which can measure waveform the input voltage, input current, power input, the power factor and harmonic noise
The brightness, measure the brightness of light is a black box 70 cm of high 70 cm of wide and 150 cm of long and painted in black. Packed high-power LED to measure the inside. Drilling holes black box installed instrumentation brightness (Lux meter) to measure the brightness of high-power LED lamps