◆ Passed the inspection of China's Electric Power Science Research Institute, registration number is CZL086-2c ◆ Support all functions (data reading, time-triggered operation and management) of the Archnet AMR system ◆ Compatible with Meter Interface Unit (MIU), i.e. a combination of Meter Interface Unit (MIU) and Multi-channel Meter Interface Unit (MMIU) can be installed at the same time in a local area. This is a significantly practical approach. Some meters are dispersed inevitably in a local area. For instance, in a 3-phase metering system where there are some meters located remotely apart, a pure MMIU approach is not cost effective. ◆ 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)x120mm(W)x60mm(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