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Yes, it can be installed for only 10 yuan.
My home is also just installed, go to the hardware to buy a set of cat's eyes, and then ask a master to go to your house to manually install, the installation fee is 5 yuan, the cat's eye is 5 yuan, a total of 10 yuan, I wish you success!
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As long as a few dollars to buy one, you can install it.
My house also just installed it, go to the hardware to buy a set of cat's eyes, and then use an electric drill to make the appropriate holes. Then put it on and you're good to go!
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can be installed, carpenters are not professional. If you want to install, go to the building materials market, find a store that sells anti-theft doors, and express your needs to them, in their hands this is not a problem, cat's eye recommends that you install a copper cat's eye, that is, the diameter is a little smaller, don't install the kind of bells and whistles doorbell cat's eye is one of the thick, because the hole drilled is a bit big.
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Find a professional cat's eye seller, prepare enough funds, and he will naturally help you solve it!
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It doesn't affect that it can be installed It seems that this problem should not be in this =.=!
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Of course, you can install it, go to the hardware store and buy one and you can install it.
Don't replace the cat's eye, there will be a general security door, just buy one.
Absolutely, there are special cat's eye drill bits, and choose the right drill bit according to the size of the cat's eye. >>>More
It depends on which brands you buy, many anti-theft doors now have that kind of copper cat's eye, which is the kind that prevents the cat's eye lock picker from unlocking, there is really none, you can only buy one and install it yourself.
The "cat's eye" is composed of a concave lens and a convex lens, the objective lens is a concave lens, and the eyepiece is a convex lens, but the focal length of the objective lens is shorter, the focal distance of the eyepiece is longer, and the focal length of the eyepiece should be equal to or greater than the distance between the objective lens and the eyepiece (the length of the cat's eye) and the sum of the focal length of the eyepiece, so that when people look from the inside of the door, they can clearly see the situation outside, and when they look from the outside to the inside, they will not see anything.
The eye can see bai into a special and precise DU optics. >>>More