1. Introdução
Thank you for choosing the UMI LX-300C Step Up Voltage Converter. This device is designed to safely convert 100-120V AC input voltage to 220-240V AC output voltage, enabling you to use your 220-240V rated electrical appliances from regions like Europe or Asia in countries with 100-120V power outlets, such as the United States, Canada, or Mexico.
The LX-300C features a compact design, dual universal outlets, and multiple built-in safety protections to ensure reliable and efficient operation for your compatible devices.

Image 1.1: Visual representation of voltage conversão de 100-120V para 220-240V.
2. Instruções importantes de segurança
AVISO: O não cumprimento destas instruções de segurança pode resultar em incêndio, choque elétrico ou ferimentos.
- Não sobrecarregue: The UMI LX-300C has a maximum rated power of 300 Watts. Ensure the total power consumption of all connected appliances does not exceed 300 Watts. Overloading will trigger an alarm or automatic shutdown and can damage the converter or connected devices.
- Check Appliance Wattage: Before connecting any appliance, verify its power consumption (wattage) on its nameplate or instruction manual. The appliance's wattage must be less than 300W.
- Somente para uso interno: This converter is designed for indoor use in dry environments. Do not expose it to rain, moisture, or extreme temperatures.
- Ventilação: Ensure adequate ventilation around the converter. Do not block ventilation openings.
- Aterramento adequado: Always plug the converter into a properly grounded 100-120V AC outlet.
- Crianças e animais de estimação: Mantenha o conversor fora do alcance de crianças e animais de estimação.
- Manuseio: Do not drop, disassemble, or attempt to repair the converter yourself. Contact qualified service personnel for any repairs.
- Cabo de alimentação: Use only the provided power cord. Do not use damaged cords or plugs.
3. Conteúdo da embalagem
Por favor, verifique se a embalagem contém os seguintes itens:
- UMI LX-300C Step Up Voltage conversor
- Cabo de alimentação
- Manual de instruções
If any items are missing or damaged, please contact UMI customer support.
4. Produto acabadoview
The UMI LX-300C features a sleek, compact design with clearly labeled ports and controls.

Imagem 4.1: Frente view of the UMI LX-300C Voltage Conversor.
Painel frontal:
- Interruptor de alimentação: Toggles the converter ON/OFF.
- Luz indicadora de energia: Illuminates when the converter is powered ON.
- Input AC110V Port: Connects the converter to the main power supply (100-120V).
- Fusível: Provides overload protection.
Painel traseiro:
- Output AC220V Sockets (x2): Connect your 220-240V appliances here. These are universal sockets compatible with various plug types (e.g., European, Chinese, Korean).
Video 4.2: An official UMI video demonstrating the features and usage of the UMI Voltage Converter Transformer, showing its compact size, dual outlets, non-slip design, and power controls. This video highlights the product's design and functionality.
5. Configuração
- Colocação: Place the UMI LX-300C converter on a stable, flat surface. Ensure there is sufficient space around the unit for proper ventilation. Avoid placing it near heat sources or in direct sunlight.
- Conectar à energia: Insert the provided power cord into the Input AC110V port on the converter. Then, plug the other end of the power cord into a standard 100-120V AC wall outlet.
- Conectar aparelho: Ensure your 220-240V appliance is turned OFF. Plug your appliance's power cord into one of the Output AC220V sockets on the rear panel of the converter. If using multiple appliances, ensure their combined wattage não excede 300W.
6. Instruções de operação
- Ligar: Once the converter and your appliance are connected, switch the power button on the front panel of the converter to the "ON" position. The power indicator light will illuminate.
- Use Appliance: Turn on your 220-240V appliance. It should now operate normally.
- Desligar: When you are finished using your appliance, first turn off the appliance, then switch the power button on the converter to the "OFF" position. The power indicator light will turn off.
- Desconectar: Unplug the appliance from the converter, and then unplug the converter from the wall outlet.
Considerações importantes:
- Always ensure the total wattage of connected devices does not exceed the converter's 300W capacity.
- For optimal performance and safety, it is recommended to use a converter with a wattage rating at least 20-30% higher than your appliance's maximum power consumption.
- The converter is designed for continuous use but avoid running it at full load for extended periods.
7. Especificações
| Recurso | Detalhe |
|---|---|
| Número do modelo | LX-300C |
| Vol de entradatage | CA 100-120 V |
| Volume de saídatage | CA 220-240 V |
| Potência máxima | 300 Watts |
| Dimensões do produto (C x L x A) | 8.46 x 6.02 x 2.05 polegadas (21.5 x 15.3 x 5.2 cm) |
| Peso do item | 6 libras (2.7 kg) |
| Fonte de energia | Elétrico com fio |
| Tipo de montagem | Montagem de mesa |
| Certificações | CE, CQC |
8. Solução De Problemas
- No Power / Converter Not Turning On:
- Ensure the power cord is securely plugged into both the converter and the wall outlet.
- Verifique se a tomada está funcionando conectando outro aparelho.
- Verify the power switch on the converter is in the "ON" position.
- Check the fuse. If the fuse is blown, replace it with a fuse of the same rating (T15AL250V).
- Appliance Not Working / Converter Alarms or Shuts Off:
- This indicates an overload. Immediately turn off the converter and unplug the appliance(s).
- Verifique o quetage of your appliance(s). The total wattage não deve exceder 300W.
- If using multiple appliances, disconnect some to reduce the load.
- Allow the converter to cool down before attempting to use it again with a reduced load.
- Unusual Noise (Humming):
- A slight hum is normal for transformers. However, if the hum is excessively loud or accompanied by heat or burning smell, immediately disconnect power and contact customer support.
- Ensure the converter is placed on a stable surface and not vibrating against other objects.
9. Manutenção
- Limpeza: Disconnect the converter from the power outlet before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or abrasive materials.
- Armazenar: When not in use for extended periods, store the converter in a cool, dry place, away from direct sunlight and moisture.
- Substituição de fusíveis: If the fuse blows, replace it with a fuse of the exact same type and rating (T15AL250V). Refer to the product overview for the fuse location.
10. Garantia e Suporte
UMI products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or visit the official UMI website. Please have your model number (LX-300C) and purchase details ready when contacting support.