CM7291 – Display Unit (Bluetooth®)


Multi-functional Display Unit to Use Right on the Field or Output to Advanced Recorder or Logger


CM7291 – Display Unit with Bluetooth (For the CT7000 series)


Hioki clamp on meters are best-in-class measuring devices incorporating Hioki’s expertise in current sensing technology. The CM7291 is the wireless receiving/display and output unit for the CT7600 and CT7700 AC/DC Current Sensor series, creating a standalone clamp meter for field use or enabling waveform signals to be output to a Hioki memory recorder or logger for further analysis.

Key Features

  • Send measured values to a smartphone or tablet using Bluetooth® wireless technology.
  • Use the GENNECT Cross dedicated app to display and review measured values and waveforms in real time.
  • Simultaneous dual display of the measured values, frequency, and output rate.
  • Four output formats to output data to loggers or other devices (via Display Unit).
  • Power supply and signal output for Current Sensor CT7000 series.
  • Supports AC adapter, AA alkaline batteries, and external power supply


** Note: CM7291 cannot be used alone. Use with CT7000 series.
When used in combination with the CT7000 sensor series, the frequency band for current display and waveform output is narrower than the sensor band.
Sensor CT7642, 7742 CT7636, 7736 CT7631, 7731
Measurement parameters DC, AC, DC+AC, Hz
Crest factor 3 at 5000 count or 2.5 at 6000 count for AC and DC+AC
Output method WAVE, RMS, PEAK, FREQ
Input connectors HIOKI PL 14
Output update time PEAK— FAST: 0.02 s / NORMAL: 0.2 s / SLOW: 1 s
FREQ— FAST: FAST: 0.2 s / NORMAL: 0.2 s / SLOW: 3.0 s
(WAVE, RMS: analog output)
PEAK sensing duration 2 ms or greater
(during PEAK MAX/PEAK MIN and PEAK output)
Other functions Auto range, Zero adjustment at power-up, Analysis display, Filter, Output amplification, Display value hold, Backlight , Auto-power save, Save settings, keypad lock
Typical accuracy (WAVE output DC) ±2.0% rdg. ±10.8 mV
(60.00 A range)
±2.5% rdg. ±30.8 mV
(60.00 A range)
±1.5% rdg. ±5.8 mV
(60.00 A range)
Typical accuracy (RMS output AC) ±2.3% rdg. ±10.8 mV
(60.00 A range)
±2.8% rdg. ±30.8 mV
(60.00 A range)
±1.8% rdg. ±5.8 mV
(60.00 A range)
Communication interface Built in Bluetooth® 4.0 LE, Display of measured values on an iOS or Android handset (CM7291 only)
Power supply LR6 alkaline batteries (AA) ×2, Continuous use: 16 h (backlight OFF and WAVE or RMS output, when used with CT7600s), Rated power 2.5 VA
or AC adapter 9445-02/03 (100 to 240V AC), or 5 to 15 V DC external power supply, Rated power 2.5 VA
Dust and water resistance (*1) IP54 (with sensor connected and caps fitted to AC adapter and power connector)
Dimensions and mass 52 mm (2.05 in)W × 163 mm (6.42 in)H × 37 mm (1.46 in)D, 220 g (7.8 oz) (including protector and battery)
Accessories LR6 alkaline batteries ×2, Protector ×1, Instruction manual ×1
*1:Waterproof characteristics intended to maintain measurement function; measuring energized parts while instrument is wet will increase risk of electric shock.