THDPM-1 is Single Phase Power Analyzer with Harmonics Measurement. It is used to test LED Bulbs, Lamps and other single Phase Devices. It is made for complete analysis of AC power Supplies, Sources with Load. It measures AC Parameters with Harmonics. It has special features which make it reliable for production testing also. Please visitĀ www.leddrivertesting.comĀ for more details.