DS421

Multiuser Error Calculator

DSA400

Display unit

STM4000

Basic module

STM41x0

Test voltage module

STM4200

Communication module

STM6000

Basic module

STM61x0

Test voltage module

STM6200

Communication module CL0

STM6210

Communication module M-Bus slave

STM6220

Communication module IR

STM6230

Communication module RS485

STM6240

Communication module RS232

STM6250

Communication module EDL

STM6290

Communication module for Basiszähler (electrical energy meter)

STM6291

Communication module for TK2020-02

STM6x00

Transmitter/Receiver module