Straightforward monitoring
Built-in 2.4 GHz Wi-Fi and Bluetooth connect with the S-Miles Home app; no separate DTU is required.
NEW / THREE MICROINVERTERS PER ORDER
Small footprint.
Fresh possibilities.
Meet the Hoymiles HiFlow Pro LV: a 120 V plug-in microinverter with built-in Wi-Fi, Bluetooth and simple app monitoring. Offered as a three-unit package.
3 unitsPer package
120 VNominal AC output
Wi-Fi + BTBuilt-in communication
S-Miles HomeMonitoring & commissioning
THE THREE-PACK OFFER
A practical package
for a smaller project.
Our reference three-pack uses HMS-391-1WM-LV microinverters: 3 × 391 VA = 1,173 VA aggregate rated output (about 1,173 W at unity power factor). It fits below a 1,200 W output ceiling where that ceiling and the installation are permitted.
Each unit serves one compatible PV module. The manufacturer’s box contents list a microinverter, plug-and-play cable, Star-Tool and installation guide.
Panels, mounting equipment and site electrical work are separate. We’ll confirm the exact models, accessories and retail package price in your quote.
Price my HiFlow three-packGET THE OUTPUT RIGHT3 × 391 = 1,173
The supplied series datasheet lists 360, 391, 420, 450 and 500 VA models. Three 420 VA units total 1,260 VA, so a three-pack is not automatically a 1,200 W system.
Final product choice and any approved output limiting must be confirmed before ordering.
Compact outdoor hardware
Fanless cooling and a NEMA 6 / IP67 enclosure in a unit weighing about 4 lb.
Warranty information included
The supplied North America policy lists 12 years for the microinverter and 5 years for the Flex-S3 cable, subject to its installation and other conditions.
Confirm your installation before you plug in.
A 1,200 W limit is not universal authorization to connect generation to any outlet. Local rules, utility requirements, circuit protection and manufacturer instructions govern the installation. UL 3700 product compliance does not, by itself, grant local approval.
HiFlow is grid-connected generation. It is not a standalone home battery backup system. For outage protection, explore HiONE.
REFERENCE PACKAGE / HMS-391-1WM-LV
Small unit.
Useful capabilities.
- Rated output, each
- 391 VA / 3.26 A at 120 V
- Maximum DC input voltage
- 65 V
- Maximum input current
- 14 A
- Maximum short-circuit current
- 25 A
- MPPT voltage range
- 16–60 V
- Commonly used module power
- 300–510+ W
Module selection requires checking voltage and current limits, including cold-weather open-circuit voltage. Verify the exact model’s listing and installation requirements.
Explore the source documents
HiFlow Pro LV datasheet · PDFQuick installation guide · PDFNorth America warranty terms · PDFHoymiles’ warranty policy includes a qualified-professional installation condition. Review the full policy when planning your project.
About UL 3700 and local adoption ↗YOUR NEXT STEP
Put together your three-pack.
Tell us your location, panel model and proposed installation. We’ll confirm the appropriate HiFlow package and pricing.
