HI-Link HLK-2M03 AC-DC Isolated Power Supply Module, 220V AC to 3.3V DC 600mA Step Down Buck Converter, Intelligent Household Switch Power Module Pack of 10 PCS

This batch includes 10 pieces of HI-Link HLK-2M03 professional isolated AC-DC step-down power supply modules, specially designed for converting domestic 220V alternating current into stable low-voltage direct current for small intelligent control circuits. The module adopts fully enclosed epoxy resin encapsulation technology, with an integrated isolation barrier between the high-voltage AC input terminal and low-voltage DC output terminal, which thoroughly separates the live mains power from the rear control circuit, greatly reducing the risk of electric leakage and circuit burnout, and meeting the safety requirements of household electrical equipment.

It features fixed output parameters: DC 3.3V rated voltage and 600mA maximum output current, sufficient to power single-chip microcontrollers, relay drive boards, sensor modules, indicator lights, wireless communication units and core control boards of smart wall switches, touch switches, human body induction lights and small home automation devices. The internal circuit is optimized with over-current protection, short-circuit protection and over-temperature protection mechanisms. When abnormal load or short circuit occurs at the output end, the module will automatically cut off power output to protect the module itself and the subsequent electronic components from permanent damage.

The ultra-small rectangular body saves precious PCB layout space, with standard pin spacing for direct through-hole welding on printed circuit boards, no extra bulky voltage reduction circuit needed, simplifying your circuit design and lowering the overall failure rate of finished products. The module has excellent electromagnetic compatibility and strong resistance to grid voltage fluctuation and surrounding electromagnetic interference, maintaining constant voltage output even in complex household power supply environments, avoiding abnormal reset or malfunction of smart control equipment caused by unstable power supply.

Widely applied in smart home wall switches, infrared remote control modules, door magnetic sensors, small LED drive power supplies, industrial small detection circuits, DIY electronic experimental projects, circuit board repair and student electronic competition production. The 10-piece bulk package offers better unit price, perfect for electronic engineers, maintenance technicians, hobbyists and small batch smart device manufacturers to stock up for daily development and production use.