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The E51H5 has two inputs with pulse accumulators for solid state or mechanical contacts in other sensors, such as water or gas
flow meters. These inputs are isolated from the measured circuits and referenced to the communication signal ground. Use with
contacts that do not require current to remove oxidation.
4-10 VDC
nominal
The E51H2 has one input with pulse accumulator as described above, and one phase loss alarm output terminal.
4-10 VDC
nominal
The user can set the display mode to either IEC or IEEE notation in the SETUP menu.