The "Smart Micro Solar" is a small controller with display that implements zero-emission feeding in conjunction with a smart meter and openDTU. The solution is easy to set up via WLAN using a web interface. The device will be provided with updates in the future. Only the IP of the openDTU and smart meter is stored in the controller, and the zero feed can be started. Are you looking for a simple solution for zero power supply with openDTU without having to deal with Raspberry pi, defective SD cards etc.? Then we have just the right thing for you! https://elecena.pl/product/24323477/hs-sms-01-smart-micro-solar-opendtu-zero-power-supply 2023-10-08 https://elecena.pl/product/24323477/hs-sms-01-smart-micro-solar-opendtu-zero-power-supply 2025-12-12