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Smart sockets might seem unimportant in smart home devices, but they play a crucial role in ensuring your electrical safety. If you end up buying substandard products, it could pose serious risks to your home and family. That's why it's essential to be careful when choosing a smart socket. Today, we're sharing some key tips on how to choose a reliable USB smart socket.
**Avoid Super Low Prices and Unknown Brands**
When shopping for sockets, don't be tempted by extremely low prices. A basic two-socket unit usually costs around 20 yuan, while a three-hole socket may cost about 30 yuan. Adding a USB charging port typically increases the price by an additional 10 to 30 yuan, depending on the brand and features like the number of USB ports and maximum charging current.
**Always Choose Products That Meet National Standards**
In addition to avoiding cheap or unknown brands, it's important to ensure that the sockets you buy meet the latest national standards. Here are some key points to look out for:
1. **No Universal Holes**: The new standard prohibits universal holes that can accommodate multiple plug types. These can cause poor contact, overheating, and even fires. New standard sockets have separate two-pole and three-pole jacks, ensuring a secure connection and smooth insertion.
2. **Three-Pole Jacks Must Match Plug Types**: If a socket has a three-pole jack, it should not accept two-pin plugs. This is a safety requirement.
3. **Check for 3C Certification**: Reliable sockets will have a 3C certification mark and number. The internal copper wire size and 3C number should also be clearly marked on the cable. For 10A/2500W sockets, the wire thickness should be at least 0.75mm² (increased to 1.0mm² from 2017). They should also include a safety door for the sockets.
4. **Glow-Wire Test Compliance**: All sockets must pass the 750°C glow-wire test, meaning the plastic shell won’t catch fire when exposed to an open flame.
5. **Internal Copper Sleeves**: This is another safety feature that’s more common in high-quality brands.
**Choose USB Sockets Based on Your Needs**
USB smart sockets add a power supply module to traditional sockets. The best ones come with intelligent current identification technology, which automatically adjusts the charging current to protect your devices.
When purchasing, check the output voltage and current of the USB ports. Some manufacturers list the total current across all USB ports (e.g., 5V/3A), so it's important to understand your specific needs. If you frequently charge multiple devices, consider a higher current rating, which usually means a higher price.
**Final Tips: Buy from Trusted Sources**
Even though smart sockets aren’t expensive, they are directly related to your home’s safety. Always buy from authorized stores, official online shops, or well-known brands. Don’t rush the decision — take time to research and make sure you’re getting a safe and reliable product.
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