We professional manufacture OEM of frequency meter Our company past Certificate of CE and ISO9001;

  frequency meter Product Specification:JYX-45-HZ Frequency meterOutline Size:50*100*66mm  Hole cutour size: 45*35mm1.Accuracy ±0.5±2 digit, working power AC220V or AC380V ±1050-60Hz2.Pls connect the power supply before operating,when the power supply is DC voltage,positive and negative can not be connected wronging,or it will be burn the meter.3.The voltage signal can be input directly if it`s 30-500V,above 500V should concect the current transformerXXX/100V.4.Frequency meter , sampling AC voltage signal input value,(110V-380V), i.e. display the frequency value of the voltage,the dispay range of  frequency is 30.0Hz-99.9Hz5.Technical Parameter  1.Power supply: AC220V  2.Accuracy≤input full range of 0.5%±1 digit  3.Sampling speed: about 2.5 times/sec  4.Temperature: 0∼40  5.Watt-loss≤2VA  6.Maximum input AC voltage: 500V