Power✓ verified
Hi-Link HLK-PM01 (220 V → 5 V)
Hi-Link · Shenzhen, CN
Isolated 3 W AC-DC module that lives inside the node enclosure — powers a deployed ESP32 from the machine cabinet. Isolation floats the low-voltage side → safe to touch.
Data out
n/a — 5 V rail
Price
¥7.6–10 Taobao (official store) · ฿80–120 Shopee TH
- 7.61 CNY — official Hi-Link flagship, Taobao listing →
Sourcing
- Shopee TH · 1–3 days
Links
Gotchas
- Fuse the mains input (1 A); mains side is the electrician's — you own the 5 V side
- Add 470–1000 µF on the 5 V rail for ESP32 WiFi spikes
- Test on USB first, mains last