2W/3W/5W/10W/20W HLK-xxM12 Series AC-DC

Hi-Link 12V AC-DC Power Supply Modules are compact, PCB-mount, encapsulated SMPS modules designed for reliable power delivery directly from the mains. These modules convert 100240V AC to a stable 12V DC output, making them ideal for IoT devices, automation systems, smart home controls, communication equipment and DIY electronics.

Built with high-efficiency switch-mode technology, each Hi-Link module provides excellent performance with low heat, low ripple, high efficiency, and strong electrical isolation. They eliminate bulky transformer-based supplies, making your designs smaller, safer, and more efficient. All variants come with UL/CE compliance, overload protection, short-circuit protection, and long-term durability.

Whether you’re building a home automation controller, embedded system, or compact industrial project, Hi-Links 12V modules offer global voltage compatibility, easy PCB integration, and dependable 24/7 operation.

Common Features All 12V Hi-Link Modules (2W, 3W, 5W, 10W, 20W)

• Wide global AC input range: 90264V AC

• Stable 12V DC regulated output

• High-efficiency switch-mode power supply (SMPS) design

• Built-in short-circuit, overload & over-voltage protection

• 3000VAC isolation, ensuring safe operation

• Ultra-compact, PCB-mount encapsulated design

• Very low ripple & low noise

• Low power consumption, <0.1W no-load loss

• Designed for EMC & Safety compliance (UL/CE certified)

• Long-life, high-reliability components

• Natural air-cooling, no heatsink required

• Ideal for IoT devices, automation, smart homes, instrumentation, controllers, sensors

Applications (Common for All Hi-Link 12V Modules)

These Hi-Link 12V AC-DC modules are used across:

Smart Home & IoT

• Wi-Fi NodeMCU/ESP8266/ESP32 power supply

• Smart switches & smart lighting systems

• Voice assistant-based home automation

Industrial & Automation

• Sensor interfaces

• PLC control boards

• Small industrial controllers

• Relay control circuits

Communication & Networking

• Routers, network nodes

• Telecom mini devices

Consumer Electronics

• Compact chargers

• LED drivers

• Low-power 12V gadgets

DIY & Educational Projects

• Robotics

• Arduino/Raspberry Pi interface power

• Prototyping and embedded system projects

Precautions & Safety Instructions

To ensure safe operation of all Hi-Link 12V modules:

Electrical Safety

• Always handle the module carefully when connected to AC mains (100240V).

• Do NOT touch any conductive parts while powered.

• Enclose the module properly inside an insulated case before deploying in real projects.

• Add proper fuses, MOV surge protectors, and isolation where required.

Thermal & Environmental

• Ensure good ventilation around the module during operation.

• Avoid placing near heat-generating components.

• Do not exceed operating temperature limits (-20C to +60C).

Wiring & Installation

• Ensure correct AC input polarity and 12V output polarity.

• Solder securely if using permanently on PCB.

• Avoid short circuits during installation and testing.

Load & Usage

• Do not exceed the rated wattage of the selected variant.

• Maintain at least 20% load headroom for long-term reliability.

• Use only in indoor, dry environments.