Optical communication adapter

The OKK-RS232 and OKK-USB optical communication adapters are readout adapters for communication between an electricity meter with an optical interface and a readout device with either an RS232 or USB interface.


  • Readout via the D0 interface on the meter
  • Magnetic holder
  • Usable independent of voltage supply
  • Data transmission with 9600 baud

Can be combined with the following products:

  • Devices with a D0 interface
  • Readout devices with RS232 or USB interface
  • Software: COMBI-MASTER 2000 and COMBI-MASTER 2.0

Product Data Sheets

Technical Data Sheet Instruction Manual EU Declaration of Conformity EMH+Orig FTDI-Driver 2-12-36 EMH FTDI-Driver 2-12-36 EMH+Orig FTDI-Driver 2-12-28 EMH FTDI-Driver 2-12-28 Product Overview

Note for customers:
If there are error messages when using the driver of version 2-12-36 and the EMH programme LZQJ Downloader, the driver version 2-12-28 can be used.

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