HLK-5M03 AC-DC 220V to 3.3V Step down Power Supply Module Switch Buck Converter
The HLK-5M03 is a small size low cost AC to DC converter which can take in 110V/220V AC at 50/60 Hz and give 3.3V 5W output. The module is can be used in designs which run on 3.3V and needs to be powered form the AC mains.