* Frequency meter
* Measuring range: max. 9999
* Red LED display, 14.2 mm high
* Power fail holing function
* High presision
* With or without analog output:0~20mA or 4~20mA
* Power supply: AC 90~250 V ( DC 24V or DC12V can be ordered)
* Dimension: 48H×96Hmm
* Ambient temperature: 50 ±2℃ (45~75% RH)