$208

DC DC Converter 24V 36V 48V 60V 72V To 12V/13.8V Step Down Voltage Reducer

$6.19

6-24V DC Input to 5V 2A USB Car Charger Module DC-DC Buck Step-Down Converter

$6.98

1x 10x LM2596S DC-DC 3A Buck Adjustable Step-down Power Supply Converter Module

$385

Thermo Electron Corp STD5131 I/P Converter Transducer STD 5000 4-20mA 3-15PSIG

$7.99

DC 3V-6V to 400kV 400000V Boost Step-up Power Module High-voltage Generator

$39.99

Pulse 45W International Power Adapter, Universal Travel Adapter with PD Fast ...

$47.49

300W Portable DC Power Adjustable Compatible With Milwaukee 18V Battery USB DIY

$7.98

10X Mini360 3A DC Voltage Step Down Power Converter Buck Module 3.3V 5V 9V 12V

$10.98

DC-DC Converter 20A300W Step Down Buck-Boost Power Adjustable Charger Board Tool

$20.99

DC 24V to DC 12V 30A 360W Converter Step Down Voltage Regulator Waterproof

$15.57

48V to 12V Voltage Reducer DC to DC 10A 120W Converter Regulator Waterproof

$1.99

10x Battery holder, cr2025 or cr2032 cell Holder PCB mount USA