> For the complete documentation index, see [llms.txt](https://docs.smart-stuff.nl/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current.md).

# FIRMWARE V2 — CURRENT

- [Firmware v2 overview](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/firmware-v2.md): Firmware v2 is the shared current software layer for Smart Meter Modbus Adapters.
- [Device Manager](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/device-manager.md): Configure, monitor and update a firmware v2 Smart Meter Modbus Adapter over USB.
- [Configuration](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/configuration.md): Configure meter source, Modbus RTU, termination and LED brightness in firmware v2.
- [LED indicators](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/led-indicators.md): LED behaviour and diagnostics for firmware v2 hardware variants.
- [Confirmed device configurations](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/confirmed-configurations.md): Modbus settings that users have successfully applied with specific devices.
- [Register mappings](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping.md): Complete firmware v2 mapping and register reference.
- [Default - TeltoCharge](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/default-p1.md): Firmware v2 register overview for the Default - TeltoCharge mapping.
- [SDM630](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/sdm630.md): Firmware v2 register overview for the SDM630 mapping.
- [DTSU666](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/dtsu666.md): Firmware v2 register overview for the DTSU666 mapping.
- [Alfen](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/alfen.md): Firmware v2 register overview for the Alfen mapping.
- [EM330](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/em330.md): Firmware v2 register overview for the EM330 mapping.
- [EM111](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/em111.md): Firmware v2 register overview for the EM111 mapping.
- [ABB B21](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/abb-b21.md): Firmware v2 register overview for the ABB B21 mapping.
- [EMPRO / MX3xx](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/empro-mx3xx.md): Firmware v2 register overview for the EMPRO / MX3xx mapping.
- [Default - floats](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/default-floats.md): Firmware v2 register overview for the Default - floats mapping.
- [KLEFR / Inepro](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/klefr-inepro.md): Firmware v2 register overview for the KLEFR / Inepro mapping.
- [Phoenix Contact EEM / XM3xx](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/phoenix-eem-xm3xx.md): Firmware v2 register overview for the Phoenix Contact EEM / XM3xx mapping.
- [Charge Pro](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/charge-pro.md): Firmware v2 register overview for the Charge Pro mapping.
- [DRIS](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/dris.md): Firmware v2 register overview for the DRIS mapping.
- [Wallbox - P1MB](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/wallbox-p1mb.md): Firmware v2 register overview for the Wallbox - P1MB mapping.
- [SolarEdge](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/solaredge.md): Firmware v2 register overview for the SolarEdge mapping.
- [SunSpec 203](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/sunspec-203.md): Firmware v2 register overview for the SunSpec 203 mapping.
- [Updating firmware](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/update.md)
- [Release notes](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/release-notes.md): Release history for shared firmware v2 and legacy P1 Modbus firmware v1.