How to clear the network in a second-hand house? The optical modem, router and camera left by the previous owner, I came all the way over when I helped my cousin take over

My cousin bought a second-hand house in March this year. The original owner was in a hurry to go abroad and left almost the whole family to her.: The optical modem, router, four cameras, and even the smart doorbell at the door cannot be taken away. For the first week, her home network was connected, and the WiFi name was her last name. I thought that was the end of it. As a result, questions lined up in the second week.: The broadband suddenly stopped. I found out that the original owner had canceled the account. ； In the camera App, three cameras are online and one is offline. The original owners of the three cameras online can view them at any time. ； She wanted to change the router password, but she couldn't get into the backend. I came to help her clean up the whole afternoon, and then I discovered that the online liquidation of second-hand houses has more pitfalls than I imagined, and every step has a time limit - some have to be done on the same day, and if you are late, you will set yourself up for trouble.

This matter has nothing to do with I collect second-hand smart devices Not the same yet. In second-hand transactions, the buyer and seller settle the accounts face to face. What comes with the house is that "the person is gone, but the things are still there, and the account is in his hand." The initiative and information all belong to the absent party. The following is written in the order in which I actually handled it. Which steps can be saved and which steps must be done on the same day are clearly marked.

The first thing is not the equipment, but to ask who owns the broadband line.

The easiest thing to step on is the default that "the broadband in the house follows the house." The broadband account is with the person and has nothing to do with the property. If the original owner did not cancel the account, but you continue to use it, you owe him a favor. If he or she deactivates his account before leaving the country one day, your home will be disconnected on the spot. ； What's even more troublesome is that if the contract has not expired, you can't stop it. If you want to install a new one yourself, and the address is listed with someone else's in-transit contract, the port in the operator's system is "occupied" and new orders cannot come in.

So on the day you close the house, the first thing you should do is ask the agent or original owner for three pieces of information:: Which operator is the broadband provider, when will the contract expire, and whether the equipment deposit has been paid. Then call the operator to report the address and check the status. My cousin’s house is the one that the original owner went through to cancel the process. The optical modem and set-top box must be returned to the business hall according to regulations. Rules for canceling and dismantling the machine I had done one with my mother-in-law before, and the equipment had to be recycled. But her optical modem was a second-hand cat bought by the original owner. The operator confiscated it and kept it in the house - this is a gray area.: The machine is yours, the account is theirs, and the port data may be cleared at any time. The final solution for our family is to just buy new decorations.: New account, Shin Kong Cat (Tianyi 4.0 sent by China Telecom, Gigabit port), the old cat of the original owner left. A prerequisite for installing a new one is that the original owner's broadband must be dismantled first, otherwise the ports will be occupied and cannot be installed. This requires urging him or the operator, but it cannot be delayed.

By the way, if the original owner's broadband contract has not expired and he refuses to cancel, don't force the operator to move his service away, and you can install it again when the ports are free. This rule follows myself moving office moving machine It's the same set, but the active party is replaced by the other party.

The router left behind: Only when you can get into the backstage can you talk about staying.

My cousin’s unit is a Mercury D191G, and the original owner’s stickers are there, but no one knows the management password. Whether to keep this kind of machine or not depends on two steps.: Go to the backstage first and then talk about whether to stay or leave.

The way into the backstage is tried based on probability. The default is the first time you try it. The first time you enter the backend of Mercury's new firmware is to set your own password. There is no default value for the password set by the original owner. For the second try, a weak password is usually used, including the year of birth, house number, and the last six digits of the mobile phone number. In the case of second-hand houses, I recommend asking the original owner directly - if someone leaves the password for you after they have gone abroad, 90% of them don't care about the machine anymore. The third way is the most thorough: Find the reset hole on the fuselage, hold it with a toothpick for eight seconds, and restore it to factory settings. You won't lose anything distressed by restoring to factory settings. There are no configurations worth keeping in the router. Just fill in the broadband account again on the optical modem or new modem.

You can configure it again after resetting it. I wrote an article on how to configure it. Router reset after moving , copying the same formula of "three copies and two immutables". But here we need to add an action unique to second-hand houses.: Before resetting, first cancel the cloud account bound to the original owner. Mercury, Tenda, and Xiaomi machines all have Apps for remote management. The machine is under the account of the original owner. He can remotely change your home WiFi password and view the list of your home's Internet-connected devices without leaving home. Unbinding the App requires the operation of the account owner. You can either ask the original owner to delete the device in the App, or reset it and rebind it with your own account - rebinding will kick off the old binding. This is the easiest way to clean up the router. Don’t underestimate this step. After resetting my cousin’s machine, I used her mobile phone to bind the App. The moment the successful binding prompt popped up, the device in the original owner’s App became “offline and disconnected”, and the initiative was regained.

Whether or not the machine itself should be retained depends on two points.: Is the network port Gigabit (turn to the label or parameter page on the back, write 10/100Mbps 100M port machine, Gigabit broadband direct card 94M), and whether the amount of the machine is enough (refer to this if you have a lot of smart devices at home) The article about me rescuing forty devices that lost contact magnitude). My cousin's D191G has a Gigabit port and the machine is not old, so I kept it. If you come across an old machine with a 100M port, don't be polite, just replace it. Use the old machine or keep it. When bypassing Just play.

The camera is the most important part: If you don't untie them, people will always be able to see your home.

This is the only link in the entire liquidation that has security consequences. Others are troublesome at best. This is privacy. My cousin’s house has four cameras, three EZVIZ and one Xiaomi, all under the cloud account of the original owner. Theoretically, he can see his cousin's living room and bedroom when he opens the app. There is no ambiguity about this matter, it must be done on the same day.

The processing sequence I actually ran down is this. The first step is to find the original owner and ask him to unbind the device - this is the cleanest way. Just click Delete in the App and the device will return to a bindable state. If you can’t get in touch with anyone, go to the second step.: Device side reset. There is a Reset button on the camera. Press and hold to restore the factory settings. After the factory reset, the binding of the original account will be forcibly released (the device will re-enter the network configuration mode). On the EZVIZ unit, I pressed Reset for ten seconds, and the indicator light turned blue and flashed quickly. I used my cousin’s phone to re-configure the network and bind it, but the unit in the original owner’s app was no longer online. In the third step, if the machine is reset and still prompts that it is occupied, it means that the account layer has not been cleared. You can only contact the brand customer service and provide the purchase certificate or let the original owner operate it. The machine at my cousin’s house that was “always offline” turned out to be that the original owner had unblocked it but not reset it. The machine itself was always connected to the old WiFi, and once reset it became normal.

There are also things to pay attention to when choosing and keeping. Putting the image quality parameters aside for now, the key is who owns the cloud storage service of this machine. Some original owners bought a cloud storage package, but when the person left, the package was still valid, and the video was transferred to the cloud disk of his account. This kind of machine unbinds and rebinds your own account, and you have to buy cloud storage again. However, those who insert the card into the machine do not have this problem. How to judge whether it is worth keeping? What are the parameters? The second-hand equipment article The doorway is common, add one: The camera that comes with the room, don’t keep it unless your cloud account is clear, it’s not about money.

Door locks and doorbells: They don’t have the option to “stay”

I have the most determined attitude towards smart door locks: Change. It's not that the machine is bad, it's just that "who can get in?" cannot be verified. The original owner's fingerprint is still in the lock, the administrator password was set by someone else, the app was tied to it, and the property management office may still have his fingerprint information registered. You unbind his app and change the password, but his finger is still on the list - most locks can store dozens of sets of fingerprints, and you can't clear them one by one unless you restore them to factory settings, and the steps for restoring factory settings are different for each lock. Some require removing the battery cover and long-pressing, and some require entering the administrator password on the panel (you don't know the password).

The doorbell at my cousin's house does not come with a lock cylinder, and the risk level is one level lower. Just unbind and rebind it and that's it. For a smart lock with a lock cylinder, my suggestion is to use the mechanical part to press The article about choosing a door lock Check the five standards. If the lock core is C-grade and the top and bottom hooks are all in order, don't bet on replacing the entire electronic part with a new one or replacing the module. Ordinary mechanical locks are simple. You can replace them by yourself with a lock cylinder for a few dozen dollars, and it only takes ten minutes.

The same logic applies to anything with remote unlocking function: Garage door motors, community access cards. The access control card goes to the property to sell the old one and issue a new one. This is a routine action for house closing. Many people know this. ； If you don’t know the code for the garage door motor, the original owner can open the door remotely or by passing by, reset the motor or change the code. It’s in the manual, so just follow it for five minutes.

Weak current box and wires in the wall: Inspection once upon check-in and again before check-in

This step takes the most time but is the least urgent. You can take your time, but it must be done before moving in. Just because the original owner's network works, it doesn't mean that all the network cables in the wall are healthy - he may only use two of them, and the other ones have long been broken in the wall. You never know, one day you want to connect a wired port to the study only to find that the cables are dead.

The acceptance method is stupid but reliable: Plug the LAN port of the router into each outlet of the weak current box one by one, and use a laptop to test the other end. If you don’t have a line tester, you can also make a preliminary screening by looking at the network port negotiation rate. The laptop network port is Gigabit, and when plugged in, it shows 100Mbps. Most of the wires only pass four cores. Press the crystal head hard or treat the wire as a waste wire. The crimping method The article about crystal head Written in full. If the weak current box itself is too stuffed to turn around, just press The article on expansion of weak current box Organize your thoughts and label them well, otherwise you will forget which wire is connected to which house two years later.

Don’t trust the original owner’s placement of WiFi coverage. His usage is not the same as yours: Maybe one router is enough for the whole world. If your smart devices double, the signal in your bedroom will be compromised. After closing the house, I walked around with my mobile phone in my hand. How to read the signal and determine the blind spots? WiFi blind spot self-examination article The method is to move directly. At my cousin’s house, the router used to be stuffed in the drawer of the TV cabinet, and the signal in the master bedroom was -78dBm. I followed the idea in that article and moved it to an open area in the living room, and the master bedroom returned -63dBm, without spending a penny.

ending: A clearing list, divided into accounts by day, within a week, and before check-in

I made a chronological list for my cousin during the whole journey, and I’ll post it here as it is. The second-hand house network liquidation should be done in this order, and there will be no leaks.:

In the end, my cousin’s family spent less money than they imagined.: There were activities in the first year of the new broadband installation. Not a single camera was replaced, and the router was left in service. The only thing that really cost money was the electronic module of the door lock. The bulk of it was time—that afternoon plus two weekends. But the settlement is real and practical.: Every internet-connected device in her home is under her own name, and no one else knows the password. One last thing to leave for those who are looking at the house.: When negotiating the price, the ownership of the network equipment is included in the delivery list, and the treatment is the same as that of furniture and home appliances. "Privacy equipment" such as camera door locks are marked with "the original owner is responsible for unbundling", and the inspection is in person on the day of closing - it is much more worry-free than having to find someone to unbundle it after more than a dozen time zones. Is the internet speed at her home stable now? The speed test article The method will be known once you test it, and that is already a trivial matter after the liquidation is completed.