1. Introduzione
This manual provides essential information for the safe and effective operation of your SHNITPWR 144W Universal Adjustable DC Power Supply. This device is designed to convert AC input (100-240V) to a variable DC output (9-36V) with a maximum current of 4A and a maximum power of 144W. It is suitable for powering a wide range of small electronic devices.
2. Informazioni sulla sicurezza
Avvertenze di sicurezza importanti:
- This product is an AC to DC adapter, not a battery charger. It cannot be used to charge electronic devices with built-in batteries, such as laptops.
- Always select the correct output voltage before connecting the power supply to your device. Incorrect voltage settings can cause severe damage to your electronic equipment.
- For optimal performance and longevity, it is recommended to operate the power supply at less than 80% of its full load capacity. Exceeding this limit may cause overheating and shorten the product's lifespan.
- Questo dispositivo è destinato esclusivamente all'uso in ambienti interni. Non esporlo ad acqua, umidità o ambienti eccessivamente umidi.
- Non smontare o modificare l'alimentatore. Per qualsiasi intervento di manutenzione, rivolgersi a personale qualificato.
The SHNITPWR power supply incorporates multiple safety protection systems:
- oltre il volumetage Protezione: Automatically cuts off power if output voltage supera i limiti di sicurezza.
- Protezione da sovracorrente: Previene i danni causati da un assorbimento eccessivo di corrente.
- Protezione da sovratemperatura: Si spegne se la temperatura interna diventa troppo alta.
- Protezione da cortocircuito: Safeguards against short circuits in the connected device.
- Protezione dalle onde elettromagnetiche: Riduce al minimo le interferenze elettromagnetiche.

Figure 1: Built-in Safety Protection Systems.

Figure 2: Recommendation to use the power supply at 80% or less of its maximum load.
3. Contenuto della confezione
Verificare che tutti gli articoli siano presenti nel pacco:
- 1 x SHNITPWR 144W Universal Adjustable DC Power Supply
- 1 x AC Input Power Cable
- 14 x Frequently Used DC Output Tips
- 1 x Polarity Converter Cable
- 1 x DC Terminal Connector

Figure 3: SHNITPWR Universal Power Supply and included accessories.

Figure 4: Included DC Output Tips and Polarity Converter.
4. Prodotto finitoview
The SHNITPWR 144W Universal Adjustable DC Power Supply features a compact design with an integrated LCD display and a rotary knob for voltage adjustment. The unit is designed for ease of use and portability.
Caratteristiche principali:
- Uscita regolabile Voltage: Continuously variable from 9V to 36V DC.
- Schermo LCD: Mostra il volume di uscita correntetage for precise setting.
- Ampio ingresso voltage: AC 100-240V, 50/60Hz, suitable for international use.
- Uscita ad alta potenza: Up to 4A current and 144W power.
- Improved Adjustment Knob: Allows for more even and precise voltage regolamento.
- Integrated Power Off Function: The adjustment knob includes an 'off' position to power down the unit without unplugging.

Figure 5: Adjustable DC Output Voltage Intervallo.

Figura 6: Design compatto e dimensioni.
5. Impostazione
- Collegare l'alimentazione CA: Plug the AC input power cable into the power supply and then into a standard wall outlet (100-240V AC).
- Select DC Tip: Identify the correct DC output tip for your device. The kit includes 14 common tips, including various barrel sizes, Micro-USB, Type-C, and a DC terminal connector.
- Controllare la polarità: Most devices use center-positive polarity. If your device requires center-negative polarity, use the included polarity converter cable. Always verify your device's polarity requirements before connecting.
- Attach DC Tip: Connect the selected DC tip to the output cable of the power supply.
6. Istruzioni per l'uso
- Accensione: Ruota il voltage adjustment knob clockwise from the 'OFF' position. The LCD display will illuminate, showing the current output voltage.
- Regola voltage: Slowly rotate the knob to set the desired output voltage. The LCD display will show the voltage in real-time. Ensure the voltage matches your device's requirements precisely.
- Connetti dispositivo: Una volta che il voltage is set and verified, connect the DC output tip to your electronic device.
- Monitorare il funzionamento: Observe your device for proper function. If any issues arise, immediately disconnect the power supply.
- Spegni: To turn off the power supply, rotate the voltage adjustment knob counter-clockwise until it clicks into the 'OFF' position. This will cut power without needing to unplug the unit.
Applicazioni:
This power supply is suitable for a wide range of 9V-36V small household electronics, including but not limited to:
- Strisce LED
- Under-cabinet lights
- TV boxes
- Altoparlanti intelligenti
- Router senza fili
- Essential oil diffusers/humidifiers
- Ventole USB
- Wi-Fi cameras
- Hub USB
- Hard disk enclosures
- DC motors and pumps
- Digital photo frames
- DVR/NVR surveillance systems

Figure 7: Wide Range of Applications for the Power Supply.
7. Manutenzione
- Keep the power supply clean and dry. Avoid exposure to dust, dirt, and liquids.
- Conservare l'unità in un luogo fresco e asciutto quando non viene utilizzata.
- Regularly inspect cables and connectors for any signs of damage. Do not use if cables are frayed or connectors are bent.
- Do not block the ventilation openings on the power supply, as this can lead to overheating.
8. Risoluzione Dei Problemi
Problemi comuni e soluzioni:
- No Power Output / LCD Not Lighting Up:
- Ensure the AC power cable is securely plugged into both the power supply and the wall outlet.
- Controllare che la presa a muro funzioni.
- Verificare che il volumetage adjustment knob is rotated past the 'OFF' position.
- Il dispositivo non si accende:
- Confirm that the correct output voltage is selected for your device.
- Ensure the DC output tip is securely connected to your device.
- Check the polarity of the connection. Use the polarity converter cable if your device requires center-negative.
- Verificare che i requisiti di alimentazione del dispositivo (voltage and current) do not exceed the power supply's capabilities (36V, 4A, 144W).
- Instabile voltage Output (under load):
- This power supply is designed for stable output. If voltage fluctuates significantly under load, ensure the load does not exceed 80% of the maximum capacity (e.g., for 144W, keep load below 115W).
- Ensure all connections are firm and free from corrosion.
- If the issue persists, the connected device might be drawing too much current or have an internal fault.
- Power Supply Overheating:
- Reduce the load on the power supply to below 80% of its maximum capacity.
- Ensure adequate ventilation around the unit. Do not cover it.
- If overheating continues, disconnect immediately and contact support.
9. Specifiche
| Caratteristica | Specificazione |
|---|---|
| Numero di modello | SNT-0936-144W |
| Ingresso volumetage | CA 100-240 V, 50/60 Hz |
| Volume di uscitatage | DC 9V - 36V (regolabile) |
| Max Corrente di uscita | 4A |
| Potenza massima in uscita | 144W |
| Peso dell'articolo | 1.21 libbre (circa 550 grammi) |
| Dimensioni del pacco | 8.66 x 3.35 x 2.72 pollici |
| Colore | Nero |
| Certificazioni | Certificazione CE, FCC, RoHS |
10. Garanzia e supporto
The SHNITPWR 144W Universal Adjustable DC Power Supply comes with a Garanzia di 24 mesi dalla data di acquisto, coprendo difetti di fabbricazione e malfunzionamenti in condizioni di normale utilizzo.
If you encounter any issues or have questions regarding the product, please contact SHNITPWR customer support. Provide your model number (SNT-0936-144W) and a detailed description of the problem for efficient assistance.
For support, please refer to the contact information provided with your purchase or visit the official SHNITPWR websito.