22mm LED round mini digital display electronic hertz frequency meter indicator lamp measuring rang AC 0-99Hz
type: AD101-22Hz
place of origin : Zhejiang Province,China(Mainland)
brand name : NIN
mounting diameter: 22mm
color: white green red yellow blue
display type : digital display
supply voltage : AC 50-380V
frequency measuring range : 0-99HZ
display resolution :1HZ
sample rate : about 1 time/s
no input signal hint message : display 000
