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e HLK-PM03 is a compact, fully encapsulated AC-DC power supply module that converts 90–240V AC mains voltage directly into a stable 3.3V DC output. Designed by Hi-Link, this module is ideal for powering low-power electronics such as ESP8266, ESP32, sensors, IoT devices, and microcontrollers.
With built-in short-circuit, over-current, and over-temperature protection, the HLK-PM03 offers high reliability in a very small footprint. Its PCB-mount design makes it perfect for embedded products, smart home devices, industrial controllers, and DIY electronics projects.
Input Voltage: 90–240V AC (50/60Hz)
Output Voltage: 3.3V DC
Maximum Output Current: 900mA
Output Power: Up to 3W
High Efficiency & Low Ripple Noise
Built-in Protections: Over-current, short-circuit & over-temperature
Fully Encapsulated & Isolated Design
PCB Mountable – Compact Size
Certified for Safety & Reliability
1 × HLK-PM03 3.3V AC-DC Power Module
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