Second-hand housing security door lock cylinder should be cautious

Miss Chen wanted to upgrade the lock core of her second-hand security door. She purchased a lock core from Taobao, but since she wasn’t confident in installing it herself, she hired a professional technician from a specialized unlocking company. The technician, Master Wang, installed the lock cylinder. However, upon inspection, he discovered that the lock core was not an authentic anti-theft model. On the spot, he demonstrated how easy it was to open this counterfeit lock. Ms. Chen was shocked to see that Master Wang opened the lock within just ten seconds. To prevent being tricked by fake products, it's essential to buy genuine anti-theft door lock cores. A real anti-theft lock core is designed to resist both physical damage and technical manipulation. Thieves may try to use advanced tools or techniques to break in, but a high-quality lock core can effectively stop them. Xiao Bian recommends purchasing from official physical stores or the Tmall flagship stores of trusted brands. These sources ensure better quality, more secure design, and reliable after-sales service. When it comes to security, not all lock cores are created equal. Currently, the market offers three main levels of anti-theft door lock cores: A-class, B-class, and Super B-class. A-class locks take over 15 minutes to be broken into using destructive methods, and over 1 minute for technical opening. B-class locks require over 30 minutes for destruction and more than 5 minutes for technical access. The most secure option is the Super B-class lock, which can resist technical unlocking for more than 4 hours. (Note: "Super B grade" is an industry standard, not an international one.) Identifying the correct lock core level is crucial. Here are three key points to consider: 1. The main reason a security door isn't truly secure is often due to the lock core. Choosing a high-quality lock core is essential. 2. The structure and technology of the lock determine its security level. This is also the best way to distinguish between real and fake lock cores. 3. Be cautious when choosing where to buy anti-theft products. Don’t rush the decision — your safety depends on it. As a quick tip, if you insert your key halfway into the lock and it easily slides in, it’s likely a newer, more secure lock. If it doesn’t move smoothly, it might be an older model that needs replacing. Always stay alert and make informed choices to protect your home.

3mm Red Through-Hole LED

3mm Red Through-hole LED(DIP LED) manufacturer from China.



3mm Red Through-hole LED widely used for indicator LED, die hole LED and 3mm round red with lamp holder because of the high brightness and the small size.

All of our product are meet with Reach, CE, RoSH, SGS, EN62471 standards and have 5 years warranty.

3mm Through-hole LED, we supply 3mm red LED with water clear lens, 3mm red LED with red clear lens and 3mm red LED with red diffused lens. We also supply 4mm red LED with water clear lens, 4mm red LED with red clear lens and 4mm red LED with red diffused lens.


For the pin of 3mm red through-hole LED, we also have a lots of choice on it. For example: 3mm Red Through-hole LED flat pin, 3mm Red Through-hole LED curved pin, 3mm Red Through-hole LED braided pin ect.

For the bringhtness of 3mm red through-hole LED, we have three level: common bright 3mm red through-hole LED, super bright 3mm red through-hole LED and ultra bright 3mm red through-hole LED.

For the angle of 3mm red through-hole LED, 15 degrees, 30 degrees, 45 degrees, 60 degrees, 120 degrees are available.

For the raw materials, we use the LED chip from Taiwan Epistar, Tyntek, Optotech. The stability of our products have been recognized by all of our custom.

3mm Red Through-hole LED, Red DIP LED, 3mm red LED, 3mm red diffused led, red diffused led

Shenzhen Best LED Opto-electronic Co.,Ltd / BESTSMD CO LIMITED(HK) , https://www.bestsmd.com