Each MMIU can manage up to 16 electric meter, each of which requires a dedicated line to the MMIU and all of which have a shared earth connection

Support the use of infrared transmission for initialization and data reading

Each MMIU has the relay capability

Compact form of 173mm(L) x 120mm(W) x 60mm(D), easy to install into a meter box

Alternative of 3-phase and single-phase power supplies versions. The 3-phase power supply version is practically a redundancy power supply configuration to ensure that the MMIU can continue to operate as long as one of the phases is not disrupted in a power failure situation. The Data Concentrator Unit (DCU) had similar functions

Pulse signal is isolated by photo electricity to ensure reliable operation

Storage of data into nonvolatile RAM which does not need power supply to maintain memory

Low power consumption of below 0.1W on the average

Lead fused connection to be meter

Fire resistance and electric insulation of the casing measure up the national standards