Five Pack AC To DC 220V 3.3V Isolated Buck Power Supply Module Step Down Converter For Household Switches Includes Overload And Short Circuit Protection Low No Load Loss The Go To DIY Power Upgrade
✔️ 220V AC input to 3.3V DC isolated output, 5-pack modules
Compact, UL/CE-compliant AC to DC buck modules based on the HLK-PM03 design. They provide a safe, isolated 3.3V supply from mains for microcontrollers, control boards, and small electronics in DIY projects or home installations.
✅ Input range: AC 90-264V, 50/60 Hz
✅ Output: DC 3.3V, isolated
✅ Protection: overload and short-circuit protection
✅ Efficiency: high efficiency, no-load loss <0.1W
✅ Safety: EMC and safety test compliance (UL/CE)
💡 What is an isolated buck power module used for in DIY electronics?
That setup is handy for powering microcontrollers, sensors, and small control boards while keeping mains isolated for safety.
- Handy for powering 3.3V logic from 90-264V mains in DIY projects
- Great for compact control panels, IoT sensors, and hobby electronics
- Provides overload and short-circuit protection to prevent equipment damage
- Meets EMC and safety standards in a small form factor