*VAT-Free delivery according to Section 12 (3) UStG.
Since January 1, 2023, photovoltaic products have been freed from VAT based on a funding measure. As a result, private individuals receive significant tax relief when buying solar products to promote solar energy.
The following requirements must be met:
- My delivery address is located in Germany.
- The installation is only carried out if the photovoltaic system is installed on or near my private apartment, apartments as well as public and other buildings that are used for the common good. Margin-Left: -1.5EM; "> I confirm that the installed gross performance of the photovoltaic system according to the market master data register (mastr) is no more than 30 kW (peak). -1.5em; "> I am the operator of the photovoltaic system. The ordered goods are not resold.
- I confirm that the components ordered only serve to use the electricity generated with solar modules for energy management. < /Li>
By ordering this VAT, I confirm that the delivery takes place in accordance with Section 12 (3) UStG free of VAT and the requirements for the tax rate of 0% are met. If it turns out afterwards that these requirements do not template contrary to the confirmation (e.g. through an external examination), I agree that the too little sales tax will be invoiced afterwards.
Please note that orders with company address or multiple orders that exceed the maximum order quantity 2 pieces are canceled and the purchase amount is reimbursed.
For the smooth process, we ask you to consult questions or ambiguities before buying. Thank you.
You can view further information in the document from the Federal Ministry of Finance:
Opendtu / Ahoydtu Diy Kit
This DIY KIT is suitable for reading the data of a hymile inverter.
Communication with the Hymiles interverters takes place via 2.4GHz via radio. It is possible to access current values such as power, electricity, daily energy. Setting parameters such as the performance limit via web interface or MQTT.
The following Hymiles Referees are currently supported by Opendtu with the NRF24L01+ radio module: HM-300, HM-350, HM-400, HM-600, HM-700, HM-800, HM-1000, HM-1200, HM-1500
Further inverter supported by Opendtu: Solenso Sol-H350, Solenso Sol-H400, Solenso Sol-H800, TSUN TSOL-M350*, TSUN TSOL-M800*, TSUN TSOL-M1600*
*Note on TSUN compatibility: The compatibility with Opendtu is most likely related to the serial number of the inverter. Current findings indicate that TSUN inverters are supported with a serial number that begins with "11", while inverter is not supported with a serial number that begins with "10".
The optionally contained OLED Dispaly impresses with a high quality of representation. With the size of approx. 2.44cm, it has a resolution of 128 x 64 pixels. This shows texts and graphics with a high level of detail and sharpness.
With the I2C connection you can easily integrate the display into your DIY projects. Completely compatible with Arduino, 51 series, MSP430 series, STM32/2, CSR IC, etc.
Opendtu is an open source project and is under the license:
GNU General Public License V2.0
Further information on license, firmware and installation:
No soldering required. Only the PIN cables have to be plugged together. Please note the facility instructions for initial commissioning. The display in particular must be activated with a configuration file.
A QR link or a link to the instructions are included in the form of an A6 flyer.
It is also possible to install Ahoydtu. However, this must be carried out itself. For more information, see link: