... /Q,C/D,Z/Q/Z/D parameter test 3.w/RS232 interface,LCD display MCH LCR Meter,MCH-8817A LCR ... )Operating Ambient10ºC ~30 ºC, ≤80%RH for precise measurement0ºC ~40 ºC, ≤90%RH for normal usage.Power supply198V~242V, 47 ... LCR Meter Product, MCH-8817A LCR Meter,10KHz testing frequency,w/RS-232 interface