22mm AC 0-100A square mini led indicator lamp digital ammeter high efficiency accurate ammeter measurement type: AD101-22AMS place of origin : Zhejiang Province,China(Mainland) brand name : NIN mounting diameter: 22mm color: white green red yellow blue display type : digital display ampere measuring range : AC 0-100A supply voltage : AC50-380V frequency compatibility range : 50-60HZ display resolution : 1A sample rate : about 1 time/s no input signal hint message : display 000