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Smart sockets might seem unimportant in smart home devices, but they play a crucial role in ensuring electrical safety. Buying substandard products can pose serious risks to your home and family. That’s why it's important to be careful when choosing a smart socket. Today, we’ll share some useful tips on how to choose a USB smart socket wisely.
**Avoid Super Low Prices and Unknown Brands**
When buying sockets, don’t be tempted by extremely low prices. A standard two-outlet socket usually costs around 20 yuan, while a three-outlet one may cost about 30 yuan. Sockets with USB charging ports typically add an extra 10–30 yuan depending on the brand and features like the number of USB ports and maximum charging current.
**Always Choose Products That Meet the New National Standards**
In addition to avoiding cheap or unknown brands, make sure the product meets the latest national safety standards. Here are some key points to look out for:
- **No Universal Holes**: The new standard prohibits universal holes that allow multiple plug sizes. These can lead to poor contact, overheating, and even fires.
- **Separate Joints for Two-Pole and Three-Pole Sockets**: This ensures better contact and stability.
- **Three-Pole Sockets Should Not Accept Two-Pin Plugs**: This is a clear violation of the standard.
- **Check for 3C Certification**: Qualified sockets will have the 3C mark and certification number. The internal copper wire should be at least 0.75mm² (or 1.0mm² as per the 2017 standard).
- **Glow-Wire Test**: All sockets must pass a 750°C test to prevent flames from spreading.
- **Internal Copper Sleeves**: This improves safety and durability, though it's often only found in trusted brands.
**Choose USB Sockets Based on Your Needs**
USB sockets add a power supply module to the traditional socket. The best ones have intelligent current detection, which adapts to different devices and protects your battery. When buying, check the output voltage and current of the USB ports.
Some manufacturers list the total current (e.g., 5V/3A) shared among all USB ports. Be sure to know your device’s requirements before purchasing. Higher current capacity means a more expensive socket.
**Final Tips: Buy from Trusted Sources**
Even though smart sockets aren't very expensive, their quality directly affects your safety. Always buy from authorized stores, large supermarkets, or official online shops. Choose well-known brands for better reliability and support.
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