The Hioki 8840 is a Memory Hicorder. The Hioki 8840 has 4 channels and qty.4 8916 inputs. The Hioki 8916 is the Analog inputs for the 8840. The 8916 have a range of 5mV to 20V per division in 12 ranges, with max range of 500V. With the 8916 the Hioki 8840 has a frequency range of DC-100kHz.