... isolation Range:0.01Hz--100KHz(max 100KHz) Accuracy:0.01Hz. Digital 4/5/6 LED Frequency Meter (FA) Features:1, Input: various wave ... AC/DC, others: 12--30V AC/DC indicate when ordering.7, Dimemsions: FA4: 48*48*80 FA8: 96*48*80 FA7 ... manufacture thousands of different models of products, including Temperature Controller, Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor ...