Several printed circuit boards have been designed for this project.
- Universal-Taster - The main board.
- Environmental-Sensors - Environmental sensor board that fits inside a Busch-Jaeger switch.
- DSMR-Connector - Opto-isolated converter to the P1 port of Dutch Smart Energy Meter (DSMR 5.0).
- RS485-Connector - Opto-isolated RS485 converter.
- Interface-Tester - Testing board to test and evaluate the main board.