SF-72R 7 reeds 1 cycle each reed 47~53Hz 57~ 63Hz
SF-96R 11 reeds 1 cycle each reed 55~55Hz 55~ 65Hz
Input: 110V, 220V, 380V, 440V
The reeds type is formed by a number of vibrating reeds: 7 or 11 reeds.
These meters can measure a frequency field from 40Hz to 70Hz