For full specification Click Here
NORTONICS FREQUENCY METERS
Types: D48HZ, D72HZ, D96HZ
Accuracy: Class 1
Burden: 6mA
Ranges: 45-55Hz, 45-65Hz, 55-65Hz, 360-440Hz
(45-65Hz standard range) Supply voltage
must also be specified 110/240/380/415/440V
Frequency Meters