ClaroWatt Pro is a DIN rail AC power meter purpose-built for US split-phase residential grid-tie solar — the product the OEM kit should have shipped with.
Every grid-tie inverter with a limiter port ships with a meter that was never built for the US residential electrical system.
OEM meters read only one leg of US split-phase 120/240V power. Half your load is invisible — net export math is wrong from day one, causing inverter over-export or unnecessary throttling.
Requires cutting live AC conductors to install. Not installer-friendly, not safe for DIY, and not code-compliant in most US jurisdictions.
Fixed firmware. No protocol selection, no response tuning, no inverter count setting. One size fits nobody in a real residential installation.
Single-protocol output only — no Modbus RTU. Can't integrate with Home Assistant, ESPHome, or any third-party monitoring platform.
Production-ready hardware on a validated analog front end. JLCPCB SMT assembled. Gerbers on file.
Dual CT inputs, 100A/50mA secondary. Reads both 120V legs simultaneously for accurate 240V net export on every install.
72×72mm standard panel housing. Snaps into any enclosure. CTs clamp over existing conductors — no wire cutting.
RS-485 proprietary or Modbus RTU — user-selectable at configuration time, no firmware flashing required.
0.56" 4-digit 7-segment LED. Net watts offset from zero. Updated every 3 seconds in sync with RS-485 transmit.
Single connector for power and firmware updates. No proprietary tools, no separate programmer required.
Configuration locked to customer spec at time of order. Ships ready for the installation it was built for.
Plug-in solar is the fastest-growing residential segment in the US. The metering infrastructure hasn't caught up.
No phone calls. No in-person meetings. Every transaction handled through established online platforms with escrow protection.
Wefunder · Republic · StartEngine — SEC Reg CF, fully online, escrow until goal met
Kickstarter · Indiegogo — product pre-orders, funds held in escrow until campaign closes
Kiva.org — 0% interest community lending, fully online application and funding
Clearco · Capchase — online application, fund against future revenue, no equity dilution
Grid-tie inverter manufacturers — direct contact via Alibaba messaging and email, Trade Assurance escrow
Energy management and solar equipment companies — inbound inquiry via product listing and IP filing
Marketplace brands sell at 3–5× annual revenue to aggregators — fully online transaction
Acquire.com · Flippa.com — list for sale, online auction with escrow-protected close