Sensepriced
Eastron SDM630 DIN Meter
Eastron · Zhejiang, CN
Billing-quality (MID B+D certified, UL) 3-phase energy meter, up to 100A direct or CT-operated. The answer when the numbers must survive an audit.
Data out
RS485 Modbus RTU (documented register map) → RS485→IP gateway or ESP32
Price
$45–70 originals · beware ¥56 lookalikes on 1688
- 60 USD — SDM630-Modbus V2 typical
Sourcing
- AliExpress / industrial suppliers · 1–3 weeks
- Lazada TH (RS485 meters) · 2–7 days — local sellers around ฿3,800 for IoT variants
Links
Gotchas
- Electrician install — V taps always; direct variant is fully wired
- CT-operated variant keeps the current side clip-on
- Budget the RS485→IP gateway into the BOM