Introducció
This manual provides essential information for the safe and efficient operation of your SHNITPWR Universal Adjustable AC/DC Power Supply, Model SNT-0336-144. This device converts AC input voltage (100V-240V) to an adjustable DC output voltage ranging from 3.5V to 36V, with a maximum current of 4A and a total power output of 144W. It is designed for a wide range of small household electronics, offering versatility with its adjustable output and multiple connector tips.

Image: The SHNITPWR Universal Adjustable AC/DC Power Supply, showcasinpel seu disseny compacte i la pantalla digital.

Image: An illustration demonstrating various electronic devices that can be powered by the SHNITPWR adapter, such as wireless routers, CCTV cameras, and Bluetooth speakers.
Informació important de seguretat
Llegiu atentament tots els avisos i instruccions de seguretat abans d'utilitzar aquest producte. Si no seguiu aquestes instruccions, podeu patir descàrregues elèctriques, incendis o lesions greus.
- Només per a ús interior: This power supply is intended for indoor use only. Do not expose it to rain, moisture, or extreme temperatures.
- Ventilació: Ensure adequate ventilation around the power supply. Do not cover it or operate it in enclosed spaces.
- Capacitat de càrrega: To ensure optimal performance and longevity, it is recommended to use the power supply at no more than 80% of its full load capacity. Exceeding this limit can cause overheating and shorten the product's lifespan.
- Sistemes de protecció: The unit features built-in safety protections including automatic over-voltage cut-off, over-current cut-off, over-temperature cut-off, and short-circuit cut-off.
- Fire Retardant Exterior: The exterior casing is designed with fire-retardant materials to minimize fire hazards.
- Polaritat: Always verify the correct polarity required by your device before connecting. Use the included polarity converter cable if necessary.
- Not a Charger: This product is an AC to DC adapter, not a battery charger. Do not use it to charge electronic devices with batteries, such as laptops, unless specifically designed for such use, as it may damage your device.

Image: Icons representing the built-in safety protections of the power supply, including short circuit, electromagnetic wave, overcurrent, over-temperature, over-voltage, and quality microchip certifications.

Image: A visual representation highlighting the fire-retardant exterior of the power supply, emphasizing safety features.
Contingut del paquet
Verifiqueu que tots els elements siguin presents al paquet:
- 1 x SHNITPWR Universal Adjustable AC/DC Power Supply (Model SNT-0336-144)
- 1 x cable d'entrada de CA
- 1 x DC Output Cable with 5.5x2.5mm tip
- 14 x Frequently Used DC Tips (various sizes including 6.5x4.4mm+Pin, 5.5x2.1mm, 5.5x3.0mm+Pin, 5.0x2.5mm, 6.3x3.0mm, 5.5x1.7mm, 4.8x1.7mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm, Micro-USB, Type-C, and DC terminal connector)
- 1 x Polarity Converter Cable

Image: The comprehensive set of 14 interchangeable DC tips, including various barrel sizes, Micro-USB, Type-C, and a DC terminal connector, along with the essential polarity converter cable.
Característiques del producte
- Wide Adjustable Voltage Rang: Output DC 3.5V to 36V, allowing compatibility with a broad spectrum of devices.
- Sortida d'alta potència: Provides a maximum of 4A current and 144W total power.
- Entrada universal: Accepts AC 100V~240V, 50/60Hz, suitable for international use.
- Connectivitat versàtil: Includes 14 interchangeable DC tips and a polarity converter cable for broad compatibility with various electronic devices.
- Pantalla digital: An integrated LED display shows the current output voltage for precise adjustment.
- Seguretat millorada: Certified by FCC, CE, and ROHS. Features multiple protection systems including over-voltage, protecció contra sobreintensitat, sobretemperatura i curtcircuits.
- Disseny durador: Equipped with a pure copper power cord for optimal power transmission and a fire-retardant exterior for added safety.

Image: This image displays the SHNITPWR adjustable power adapter with its digital voltage display and adjustment knob, illustrating the wide output voltage interval de 3.5V a 36V.

Image: A diagram illustrating the compact dimensions of the SHNITPWR power supply unit and the lengths of its input and output cables, including the 5.5x2.5mm and 5.5x2.1mm connectors.
Instruccions de configuració
Follow these steps to set up your SHNITPWR Universal Adjustable AC/DC Power Supply:
- Connecteu l'entrada de CA: Plug the AC input cable into the power supply unit and then into a standard wall outlet (100V-240V AC).
- Select DC Tip: Identify the correct DC tip required by your electronic device. The power supply comes with a default 5.5x2.5mm tip. If a different tip is needed, select one from the 14 included tips and connect it securely to the DC output cable.
- Comprova la polaritat: Verify the required polarity of your device. The power supply's default output is center positive. If your device requires center negative, use the included polarity converter cable by attaching it between the DC output cable and the selected tip.
- Connecta't al dispositiu: Carefully plug the selected DC tip into your electronic device's power input port.
Instruccions de funcionament
To operate your SHNITPWR Universal Adjustable AC/DC Power Supply:
- Encès: Once the AC input is connected, the LED display on the power supply will illuminate, showing the current output voltage.
- Ajust Voltage: Rotate the "VOLTAGE" knob clockwise to increase the output voltage and counter-clockwise to decrease it. Adjust the voltage slowly and carefully to match the exact voltage requirement of your device. The display will show the real-time voltage. The knob is designed for even adjustment, allowing fine-tuning, for example, reaching 16V to 18V by rotating approximately 50%.
- Càrrega del monitor: While the display shows voltage, be mindful of the current draw of your device. It is recommended to operate the power supply at no more than 80% of its maximum 4A capacity (i.e., up to 3.2A) to prevent overheating and extend its service life.
- Apagar: To turn off the power supply, disconnect it from the wall outlet. The LED display may remain lit for approximately 10-15 seconds as internal capacitors discharge.

Image: A graphic illustrating the recommendation to use the power supply at a maximum of 80% of its full load to prevent overheating and prolong its service life.
Manteniment
To ensure the longevity and proper functioning of your power supply:
- Mantingueu la unitat neta i lliure de pols. Feu servir un drap suau i sec per netejar-la.
- Avoid exposing the power supply to liquids or high humidity.
- Guardeu la unitat en un lloc fresc i sec quan no s'utilitzi.
- Do not attempt to open or repair the power supply yourself. Refer all servicing to qualified personnel.
- Regularly inspect cables and connectors for any signs of damage.
Resolució de problemes
If you encounter issues with your power supply, refer to the following troubleshooting guide:
No Power Output / Display Off
- Ensure the AC input cable is securely plugged into both the power supply and the wall outlet.
- Comproveu si la presa de corrent funciona connectant-hi un altre dispositiu.
Vol incorrectetage Reading or Fluctuation
- Assegureu-vos que el voltage knob is properly adjusted and stable.
- Si el voltage fluctuates significantly under load, ensure the connected device's current draw does not exceed 80% of the power supply's maximum capacity (3.2A).
- Test the output with a separate voltmeter to confirm accuracy.
El dispositiu no s'encén
- Confirm that the correct DC tip is selected and securely connected to your device.
- Verify that the polarity (center positive/negative) matches your device's requirements. Use the polarity converter cable if needed.
- Assegureu-vos que la sortida voltage is set correctly for your device.
- Check if your device's current draw exceeds the power supply's 4A maximum.
Especificacions
| Característica | Detall |
|---|---|
| Número de model | SNT-0336-144 |
| Entrada Voltage | CA 100V~240V, 50/60Hz |
| Vol. De sortidatage | DC 3.5V~36V (Adjustable) |
| Corrent de sortida màx | 4 Amps |
| Potència de sortida màxima | 144 watts |
| Tipus de connector | Barrel 5.5mm x 2.5mm (default), plus 14 interchangeable tips |
| Característiques especials | Reverse Polarity Converter, Safety Certifications (FCC, CE, ROHS), Short Circuit Protection, Over-voltage, Over-current, Over-temperature Protection |
| Pes de l'article | 1.1 lliures |
| Color | Negre |
Garantia i Suport
This SHNITPWR product is designed for reliability and performance. For specific warranty details, please refer to the documentation included with your purchase or contact SHNITPWR customer support directly.
If you encounter any issues or have questions regarding the operation or maintenance of your power supply, please contact the manufacturer's customer service. Contact information can typically be found on the product packaging or the official SHNITPWR weblloc.
Política de devolució: Products purchased from Amazon.com typically have a 30-day return policy. Please check your purchase details for specific return eligibility.