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The DKM-411 is an advanced precision metering device offering an 3.5” size, 320x240 pixel color TFT, together with unrivalled remote monitoring capabilities over internet in a compact and low cost package. 

The unit itself is a web page and can be opened through any browser for remote monitoring. The central monitoring feature allows monitoring of thousands of meters from one central PC.




  • True RMS measurements, 0.2% accuracy

  • 3.5” TFT LCD, 320x240 pixels

  • Harmonic distortion display (63 harmonics)

  • Oscilloscope, waveform display

  • Phasor diagram display

  • Internal battery backed-up real time clock

  • Max demand display

  • User configurable display screen

  • 2 configurable relay outputs

  • Energy pulse output capability

  • 2 opto-isolated, configurable digital inputs

  • Dual active-reactive power counters

  • Both mains/generator energy metering

  • Configurable user counters

  • Voltage transformer ratio for MV applications

  • Password protected front panel programming

  • Reduced panel depth

  • Sealed front panel (IP54)

  • Phase to phase voltages: U12-U23-U31-Uavg

  • Phase to neutral voltages: V1-V2-V3-Vavg

  • Phase currents: I1-I2-I3-In-Iavg-Itot

  • Active power: P1-P2-P3-∑P

  • Reactive power: Q1-Q2-Q3-∑Q

  • Apparent power: S1-S2-S3-∑S

  • Power factor: cos1-cos2-cos3-∑cos

  • Active power counters: Pc1-Pc2

  • Reactive power counters: Qc1-Qc2

  • User counters: USR1-USR2-USR3-USR4

  • 2...63 Harmonics of any voltage or current

  • Phase to neutral voltages vector angles

  • Phase to phase voltages vector angles

  • Phasor vector diagram

  • Modbus RTU RS-485

  • Modbus TCP/IP

  • SNMP

  • TCP/IP server

  • TCP/IP client

  • UDP

  • SMTP

  • Embedded web server

  • Web monitoring

  • Web programming

  • GSM-SMSsending

  • e-mail sending

  • Central Monitoring through IP

  • Free configuration & monitoring software


  • Ethernet 10/100Mb

  • RS-485 isolated (Modbus RTU)

  • RS-232 for external GPRS modem

  • USB Host for data recording on flash memory

  • USB Device for PC connection

UL-CSA Certificate

Product Brochure

Installation Guide

User Manual

Product presentation

Modbus Guide

Parameter Setup and Monitoring Software: Rainbow Plus

Rainbow Scada Remote Monitoring Software

USB Cable

Watertight Gasket

Screw Type Plastic Bracket

Spring Type Plastic Bracket

GPRS Modem

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