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How many downstream devices are supported off Mercury controllers?

Question

How many downstream devices are supported off Mercury controllers?

Answer

The EP4502 has two downstream RS-485 ports that are each capable of supporting 32 downstream devices, for a combined capacity of 64 access points.  Then another 32 network-based downstream devices are also supported. EP4502 Datasheet

The EP2500 has two downstream RS-485 ports that are each capable of supporting 32 downstream devices, for a combined capacity of 64 access points.  Then another 32 network-based downstream devices are also supported.EP2500 Datasheet

The EP1502 has a single downstream RS-485 port that is capable of supporting 32 downstream devices.  It can also support 32 network based downstream devices. EP2502 Datasheet

The EP1501 supports a total of 16 downstream devices, up to 8 of these can be on the downstream RS-485 port and the remaining on the network. EP1501 Datasheet