Modbus Watt Meter – Multi-Gem 12 by J&D

Product Description

The Multi-GEM 12 AC Watt Meter features 12-ports with Modbus Protocol for AC Current Metering.

The Multi-GEM 12 AC Watt meter is designed for commercial and residential use.  It offers professional class features for a very reasonable price. With one meter and 12 current transducers the Multi-GEM 12 is well suited for small to medium sized jobs. If there are more than 12 sources that need monitoring, multiple meters can be used together or look at our Multi-GEM 18 that offers more inputs and more protocol options.

The Multi-GEM 12 is a 0.5 S Class accuracy multi-channel Modbus AC Watt meter conforming to IEC62053-22. It can be used in commercial settings as a 4-channel meter with a 3P4W configuration.  With 1P2W configurations you can monitor up to 12 channels.  It includes an external temperature sensor that comes standard.

When shopping for CTs to use with this meter, look for AC Amp Input, AC Voltage Output.  These CTs carry this symbol on our website:

 AC Amp In, AC Voltage Out



  • 0.5 S Class accuracy meter conforming to IEC62053-22
  • 18 Channels
  • Modbus RTU and Modbus TCP support
  • External Temperature sensor included
  • 3P3W, 3P4W and 1P2W Support
  • Measures:
    • Phase voltage
    • Line voltage & current
    • Frequency
    • Power Factor
    • Unbalance
    • Active/Reactive/Apparent Power
    • Active/Reactive/Apparent Energy
    • Total Harmonics Distortion
  • Input
    • 50-690 V~ 3~ L-L, Max. 6000 A, 3~, CAT III
    • 50/60 Hz

Data Sheets

Reader Multi-Gem Data Sheet
Reader Multi-Gem Manual

Software Download


rohs compliant


ISO 9001

Additional information

Weight4 lbs
Dimensions11 x 8 x 4 in
Connection Options

Ethernet Version, Wifi Version