Features: 1. Ready to Install: Our DTU (Data Transfer Unit) is fully flashed and wired for direct installation into your own housing. Its compact design, with a width of only 25.4mm, allows for easy integration.2. Stay Connected: the DTU is plug-and-play ready. You can effortlessly monitor your PV modules from your mobile phone or PC, ensuring you have real-time insight into their performance.3. High-performance Components: The DTU features a powerful ESP32, known for its superior speed compared to the ESP 8266. Additionally, it is equipped with the stronger NRF24L01Antenne, complete with an integrated antenna.4. Wide Compatibility: Specifically designed for use with for Hoymiles inverters, our DTU is compatible with various models, including HM300, HM350, HM400, HM600, HM700, HM800, HM1200, HM1500, TSun 350, TSun 400, and TSun M800.Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance.Material: PCBcolour: BlackPackage Contents: 1 x Development board module kit (square board wiring harness color random, Cannot be chosen the specific color.)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.