Hardware variants

Connections, power and installation information for each Smart Meter Modbus Adapter.

Choose the hardware page that matches the product name and hardware ID shown in the Device Manager.

Product	Hardware ID	Use this variant for
D1MC	D1MC	DIN-rail installations using DSMR/P1 or HAN-NVE, with screw-terminal Modbus RTU and flexible 5 V power
P1 Modbus Pro	NRGD, including the ZAP2/NRGDH-based implementation	Compact DSMR/P1-to-Modbus RTU installations with P1 output; the ZAP2/NRGDH-based implementation also supports HAN-NVE with an adapter cable

NRGD exists as a regular implementation and as an implementation based on ZAP2/NRGDH. The enclosure does not reliably distinguish them. Check the connection sticker because the A and B terminal positions differ; the ZAP2/NRGDH-based implementation also replaces the separate blue status LED with an RGB LED in the P1 input.

Firmware configuration and register mappings are documented once under Firmware v2 — current.