The Hi-Link HLK-PM01 is a ultra-miniature, isolated switching power supply module designed to step down household AC mains voltage directly to a low-voltage DC rail. Encapsulated in a rugged, flame-retardant plastic shell, this module features full electrical isolation between the high-voltage AC side and the low-voltage DC side.
It is the industry-standard choice for DIY automation enthusiasts, engineering students, and commercial makers who need to power 5V microcontrollers (like an Arduino, ESP32, or relay module) directly from a household wall outlet or junction box without adding unnecessary bulk.
Ultra-Compact Footprint: Extremely small dimensions allow it to easily fit inside wall switches, extensions, or tight project boxes.
Full Electrical Isolation: High isolation voltage safeguards your sensitive low-voltage microcontroller logic from high-voltage AC mains line faults.
Global Voltage Compatibility: Accepts any input from 90V AC all the way up to 264V AC, making it highly stable during local voltage fluctuations.
Low Noise & Ripple: Delivers clean output voltage with minimal high-frequency ripple, keeping your MCU data stable.
Built-in Protection Suite: Onboard short-circuit protection, over-current protection, and thermal shutdown mechanisms keep your circuit secure.
| Feature | Specification |
| Manufacturer | Hi-Link (Genuine Original) |
| Input Voltage Range | 90V to 264V AC (50/60 Hz) |
| Output Voltage | 5.0V DC (pm 0.1 V) |
| Maximum Output Current | 600mA (0.6 A) |
| Rated Output Power | 3.0 Watts |
| Efficiency | $>70\%typical |
| Enclosure Material | Flame-Retardant Plastic Potted Type |
| Dimensions | 34mm x 20mm x 15mm |
AC Pins (Input Side): Connect to your Neutral (N) and Live (L) 220V household lines. (Polarity doesnt matter for the input pins).
-V Pin (Output Side): Ground / Negative output terminal connection.
+V Pin (Output Side): Regulated +5V DC positive output terminal connection.
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