Ecosystem & Compatibility
Build Your Hoymiles System
Start with a microinverter, match the gateway, cabling, and meter, add free monitoring — then add storage when you’re ready.
What a DTU is for
The Data Transfer Unit is the communication hub: it collects each microinverter’s data over Sub-1G wireless and sends it to S-Miles Cloud. It’s also how you set the grid profile.
DTU-Pro vs DTU-PRO-S
- DTU-Pro (Wi-Fi or 4G) — for the HM microinverter line.
- DTU-PRO-S (Wi-Fi or 4G) — for the HMS line.
Why Sub-1G?
Standard 2.4GHz Wi-Fi struggles through walls and over distance. Hoymiles’ proprietary Sub-1G link is built for industrial-grade stability so monitoring stays connected.
Remember: the microinverter operates without a DTU, but you need one to monitor and to change the grid profile (e.g., CA Rule 21 → IEEE 1547).
Need help choosing? CSE Solar USA will spec the right Hoymiles system for your project. Call (702) 608-8385 or request a quote.