AC DC power module

Start by matching the required output voltage and current to your project needs. For Arduino boards and ESP32/ESP8266 sensors, the 5V modules are common, while 12V options power relays and motors. In this set, you’ll find 5V modules rated up to 700mA, 12V modules offering up to 250mA or 420mA depending on model, and a 3.3V option. Always verify the input range (typically 90–240V AC) and ensure the output is isolated and clean for reliable operation.

Look for built‑in protections such as over‑current, short‑circuit, and over‑temperature protection across the range. Fully encapsulated and isolated designs help prevent electrical noise and accidental contact, enabling reliable continuous operation in compact enclosures. These protections are essential for hobby projects where power stability and safety are priorities, especially when powering microcontrollers, relays, and sensors from mains sources.

Yes, PCB mounting is supported on several models, making integration into compact enclosures straightforward. The HLK‑Pxx series is described as PCB mountable, which means you can solder these modules onto a board for a neat, compact build. Embedded projects benefit from this design as it reduces wiring complexity and improves reliability in confined spaces.

Absolutely. The range includes 5V and 12V outputs commonly used with Arduino boards, ESP32/ESP8266, sensors, relays, and displays. The 5V 700mA module is a staple for low‑power microcontroller projects, while 12V modules support higher‑current loads such as LED drivers and small motors. These modules provide a dependable, mains‑powered power supply for many popular hobby builds.

The HLK‑5M12 delivers up to 5W with about 420mA output, offering higher current capability than the HLK‑P12’s 3W/250mA. Both provide a 12V output and share protections and encapsulation, but the 5M12 is meant for devices needing more current. Choose based on your device’s current draw to ensure stable operation and avoid undervoltage at peak load.

Yes, the HLK‑PM03 provides a compact 3.3V DC output with up to 900mA, suitable for ESP8266/ESP32 sensors and other low‑power electronics. It accepts input from 90–240V AC and includes the same safety protections and isolation as the other models. This makes it ideal when your project runs on microcontrollers that require 3.3V logic and modest current.