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WattNode Module for Modbus


  • WND-M1-MB

    For details see Specifications and Downloads

    Select options below. To add more than one item with this configuration, use the quantity box at the bottom.

    Certificate of ANSI C12 accuracy with different current transformers.

    WattNode Factory Configuration

  • All Power Meters require 1 to 3 CT's to measure current. Our standard CTs are accuracy class 1.2. If calibration certificates are required, use class 0.6 or better CTs.  To choose your CTs and for more information, see the CT Product Page

    The WattNode Modules for Modbus work with our DIN Rail Power Supply. One power supply can power up to 10 modules. To purchase a power supply after adding this product to your cart, view the Power Supply page.



WattNode Module for Modbus Key Features
One model for 100 to 600 Vac, wye or delta, single-phase or three-phase
Meets ANSI C12.1 for use in revenue grade metering
Nominal accuracy 0.5% (see Installation and Operation Manual (PDF, 68 pages) for details)
True RMS power even with leading or lagging power factor and chopped or distorted waveforms
SunSpec Certified™ register map supported (see SunSpec Certification Certificate)
Measure variable speed motor drives used in HVAC, refrigeration, and pumping systems
Compact, DIN-rail mount design for easy installation where space is limited
Instrument powered from a 6-24 Vdc supply or from an isolated 12-24 Vac control transformer
Pluggable screw terminal blocks for easy wiring
UL, cUL Listed – Tested for safety and approved for use throughout North America and the European Union.
Assembled in USA, qualified under the Buy American provision in the American Recovery and Reinvestment Act of 2009 (ARRA).
Five year warranty

Specifications and Downloads Page


WARNING: This product can expose you to chemicals including formaldehyde, which is known to the State of California to cause cancer. For more information go to: