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Add some oil to the automatic lock and it should solve the problem for you.
Advantages: Advanced technology: advanced science and technology are the characteristics of smart home security systems. The smart home security system brings together a variety of technologies to achieve different functions through common application and control, and provide people with ideal services. >>>More
It can only be said that in general, there are a lot of after-sales problems, and my buddies are looking forward to after-sales, and every time they encounter an automatic lock, they have a headache.
Wang Li's lock cylinder is notoriously non-theft-proof, remember to change the lock cylinder even if you want to sell it.
Wang Limen is laborious, other people's door keys can be screwed 45 degrees to open the door, Wang Li's to be screwed 90 degrees. From the perspective of human movement mechanics, the elderly and children are easy to twist their hands, and they can't twist it. It's heavy, and it takes a lot of effort to twist it. >>>More
One is to look at the people outside, and the other should be able to open the door, but this has to ask for the unlock.