✅HEAVY-DUTY 5000W PEAK: Handles power tools, machinery & multiple appliances simultaneously. Peak Power 5000W (5-second capacity). ✅DUAL DIRECTION CONVERSION: Step Up 110V→240V OR Step Down 240V→110V with selector switch.
eBay
8-22V to 3-15V 3A Adjustable Output Power Supply Transformer Step-Down Volt Module DC Buck Converter Voltage Regulator CE RoHS
Aliexpress UK
It's the red switch on the back.
eBay
12V 24V to 5V 5A 10A 15A DC DC Converter Step Down Voltage Regulator Buck Converter Car Power Supply Transformer Module
Aliexpress UK
Suitable for Water dispenser, rice cooker, fan fax machine, air machine, computer.
eBay
24V 36V 48V 60V 72V 18-90V to 12V 10A 20A 30A 40A DC DC Converter Step Down Voltage Regulator Transformer Car Power Supply
Aliexpress UK
eBay
12V24V to 9V5A power step-down module 12V to 9V DC transformer 24V to 9V car converter
Aliexpress UK
Support max up to 200W output power. Output Power: 200W. Ideal for fax machine, fan, air machine, computer, water dispenser, phone/tablet etc. Plug Type: UK Plug. 3-pin UK plug design. Do not use it with high powered appliances such as hair dryers, electric iron etc.
eBay
DC 8V-40V to DC 12V 10A 120W Stabilizer Converter Transformer Regulator Step Up Down Voltage Module LED Solar Car Power Supply
Aliexpress UK
Output Power: 200W. Do not use it with high powered appliances such as hair dryers, electric iron etc. ▶ Ideal for fax machine, fan, air machine, computer, water dispenser, phone/tablet etc. Plug Type: UK Plug.
eBay
DC 12V 24V to 5V 3A Converter DC Voltage Reducer Regulator Step Down Buck Converter Power Supply Volt Transformer Module
Aliexpress UK
eBay
AC 220V To DC 5V 1A 2A 5W USB Transformer Voltage Regulator Power Supply Module Step Down Converter 4K Module Wireless Camera
Aliexpress UK
It has been through testing standards and super stable under 300W. 500VA is only peak power, do not use it for 500W device.
eBay
12V24V TO 5V 1A 2A 3A 4A 5A Step-down Power Supply Module 12V TO 5V Vehicle Converter DC Transformer CE RoHS Certification
Aliexpress UK