Home HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB
HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB

HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display

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HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display - OpenELAB

HW-140 DC-DC Buck Boost Converter Step Up/Down, LCD display

HW-140 DC-DC Buck Boost Converter Step Up/Down

The HW-140 power supply module is a multi-functional product that displays the input and output voltage, current or power in real time, switching via the IN/OUT buttons.The ON/OFF button is used to turn off the display or the output and to indicate the output status via LEDs. Voltage and current are adjusted by independent trimmers accurate to 0.01V and 0.001A respectively, and the CC lamp will light up when the current reaches the set value. The modules have a soft start and a built-in anti-reflow diode for a wide range of applications, especially to prevent reverse current flow and provide reverse connection protection during charging.

 

Specifications:

  • Input voltage: 5.5-30V

  • Output voltage: 0.5-30V

  • Output current: 3a constant, with additional cooling up to 4a

  • Efficiency: ~ 88%

  • Switching frequency: 180kHz

  • Measurement accuracy: +-5%

  • Dimensions: 66x48x22mm

  • Weight: 47g

 

Effective Date: March 27, 2025

At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 60 days of the shipment date.

  

1. Warranty Disclaimer

Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.

  

2. Warranty Policy

Warranty Period

The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.

Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.

If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.

After the warranty period, support may still be available at a reasonable fee.

  

Warranty Exclusions

The warranty does not apply in the following cases:

  • The product is beyond the 12-month warranty period.
  • Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
  • Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
  • Unauthorized repair attempts by the customer.
  • The product is not defective but has been opened and is non-returnable by policy.

   

3. Returns & Refunds

If you're not satisfied with your purchase, you may be eligible for a return or exchange:

  • Return for Refund: Within 15 days of receipt (unopened).
  • Return for Replacement: Within 30 days of receipt (damaged or defective).
  • Exchange Window: Up to 30 days from receipt.

Please email us at info@openelab.io for a return authorization before sending anything back.

  

Return Conditions

  • Items must be in original, clean, and mint condition with packaging intact.
  • Returns of damaged, used, scratched, modified, or programmed items will not be accepted.
  • Include the receipt, a brief note with your name, order number, and reason for return.

  

Shipping & Fees

  • Customers are responsible for return shipping to our warehouses in Europe, the US, or China.
  • Refunds may be subject to additional shipping fees unless the return is due to our error.
  • A flat €8 shipping fee will be deducted for returned items that originally qualified for free shipping.

   

Payment Platform Fees

For refunds processed through third-party platforms such as PayPal or Braintree, a standard 3.5% service fee may be deducted to cover payment processing costs.

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