Allows for communication with electricity meters that are IEC 61107 FLAG-compliant.

Allows for communication with electricty meters equipped with ANSI C12.18 compliant optical ports.

The MTVS is used for testing, Class 1.0 and 0.5 metering systems and comprises a Class 0.2S EDMI Mk3 reference standard, an intelligent optical pick-up head, optional external clip-on CT’s (3), and PC software

The DSTU is used for testing, all types of single phase meters to an accuracy of 0.2% (at In cos > = 1.0, at 25°C). It comprises an EDMI Mk6 reference standard, multi-function optical pick-up head and a single phase 25 amp phantom load.