แนะนำเพื่อน

PQ3470-12 / Extech 1200A Power Analyzer Kit: PQ3470 with PQ34-12 Large dot-matrix, sun-readable, graphical, backlit LCD with easy-to-use onscreen menu.Adjustable Current Transformer CT (1 to 600) and Potential Transformer PT (1 to 1000) ratio for high power distribution systems.