How does the Mercury router limit children's internet time? Parental control was set up in just three steps, and I almost cut all the devices in the house from the internet

it all started like this: Saturday morning at 6:30, I got up to drink water and saw my son wrapped in a blanket sitting on the sofa, the tablet lit up, and the game sound effects on. I changed my WiFi password twice, but each time he got it out. The path to changing the password just didn't work. My main router is the Mercury D191G, and there's a 'Parental Control' option in the backend. I never thought much of it before, but after studying it carefully, I set it up in just three steps. But in the middle, I almost cut off all the devices in the house. My camera and speakers got ripped off, so you should check these traps before you get started.

clarify: parental control and WiFi timer switching are two separate things

Mercury has two functions in the backend to manage internet time, which are especially easy to mix.

one is the WiFi timer switch I wrote about before. When the time comes, the entire WiFi is shut off, the whole family is disconnected, and my own phone is cut off too. It manages 'What time is this house without internet?' which is perfect for treating me for staying up late and being too rough with the kids—I still have to reply to work messages on my phone at 10 p.m.

parental control follows another logic: "Named exemption, others are time-limited." Add your own device to the exemption list; devices outside the list can only be accessed during the time slots you designate. My child's tablet can be online from 7 to 9 p.m., my phone is still on as usual, and we don't disturb each other.

there's also a more detailed feature called "behavior management," which can block specific websites by device, which will be discussed separately later. First, look at this table for the division of labor among the three tools:

three-step setup, simpler than expected

enter melogin.cn in your browser (if you can't open it, use 192.168.0.1; forgot to look up the login password I wrote in about the Mercury initial password), go to the backend, click "Advanced Settings" in the top right, then find "Internet Controls" → "Parental Controls" in the left menu. The settings page is located here.

first step, add parental devices. click 'Add', then select your and your family's phones and computers from the dropdown menu to save. The devices on this list have no internet access restrictions at all; you can add as many devices as you like. If you can't tell which device is which, check my post check the about connecting devices, then check the online time pattern and MAC address prefix before checking the mark.

Step two: check the time frame. page is a weekly calendar grid, with checkboxes for weekdays and weekends separately. Here's a counterintuitive point: only the blank is allowed to online, while the checkmark is prohibited. I misunderstood the first time and almost set the idea for my child to be online only during school hours. My current rule is: Sunday to Thursday 19:00~21:00, Friday and Saturday 19:00~22:00. No internet on in the morning—if the internet is on in the morning, he can get up at six and squat in bed to watch.

Step 3: Turn on the main switch. the top of the page, open Parent Controls, click OK in the pop-up window, and you're done. On time, the child's tablet was completely disconnected. WiFi was still connected, but nothing could be swiped, and the page kept spinning.

biggest pitfall: those not on the parents' list are all "kids"

this is a lesson I learned overnight.

set it up at 10 p.m. that night, the rules took effect right on time. My son's tablet was disconnected, and I was very satisfied. The next morning, the Mijia app sent me a string of offline notifications: camera offline, speaker offline, robot vacuum offline.

checked official documentation, I understood that parental control rules are "except for the parent list, all devices are managed according to the child's schedule," and different devices cannot be set separate times. My camera, speaker, and vacuum cleaner were all not on the parent's list, and at 10 p.m. it was cut off in one stroke, and the whole house's smart system was completely disabled. I wrote more thoroughly about how to troubleshoot when smart devices go offline at midnight, in my article about offline devices in Mijia, but this time the root cause is parental control itself.

there's another pitfall: even devices the visitor network can't be removed, and those not on the parent's list are treated as children. A relative stayed at my house for two days, but at 10 a.m. his phone went off, and in the morning he came to demand an explanation.

solution is simple: add all the "must-disconnect" devices in the home to the parent's list—two phones, a laptop, a camera, speakers, a robot vacuum, a TV box, one by one. If the list is long, just add it all at once and don't need to change it later. The original purpose of this feature is that there is only one adult and one child at home, but nowadays every household has dozens of devices, so you have to go to great lengths to name them yourself.

just want to ban games and not cut off online classes? Parental control can't be achieved

The official Q&A clearly states: Parental control only manages time, not the website. If you want your child to use a tablet for online classes and prevent gaming, you need to switch to 'behavior management.'

path is also found in 'Advanced Settings→ Internet Controls→ Behavior Management. It sets rules based on the device: the controlled host selects the child's tablet, the destination is the domain name of the blocked website, the schedule is set to effective time, and the filtering mode is set to "Block only" to save. Block the URLs of several official game websites and video sites, and the pages won't be accessible.

But to be fair: blocking web pages is fine, but blocking apps isn't very useful. The server domain names connected to game apps are long and even have CDNs. If you block three, they switch to the fifth, and you can't keep up with them. If you really want to control by content, you either use the device's built-in teen mode or pair your child with a special children's watch hotspot. In my home, behavior management ultimately does one thing: ban the web versions of video websites. The app still plays as usual, so the backup is time management. When it arrives at 9 PM, everything is pointless. For a more thorough approach to content control, you can refer to the on Xiaomi routers for children's management—the approach is solid.

the internet is still on time? First

check these three points. Some people left comments saying setting them doesn't work, but it's probably due to these three reasons. They'll pass each one one in a row.

First, the main switch is not turned on. the time check is too fine, the switch at the top of the page isn't turned on, so everything is wasted. After installation, be sure to confirm that the switch is green.

Second, the router's system timing is incorrect. parents control the router's system time. If the router restarts after power outage, the time may reset to zero, and the rules are all messed up—the internet was supposed to be cut off at 10 PM, but it was cut off at 2 AM. Go to 'System Tools → Time Settings' to check if the current time is correct, then change it to sync with the network. This pitfall isn't unique to Mercury. I mentioned it in the of the Scheduled Restart, and all TP players have this temperament.

third, the time grid is reversed. say it again: blank means allow, check means prohibition. After setting it up, test an old phone that wasn't on the parents' list overnight to confirm the actual internet disconnection, then pass the rules to the child. Don't use the child's crying that night as a test.

Also, don't expect parents to control the flow rate. If a child uses their own phone to use mobile data and the router has no solution, this falls under negotiation, not technology. Some parents also asked how to set it up in the app— Mercury Router App searched everywhere but there was no parental control. This feature is only available in the web backend, and the app can remotely do it depending on the device, speed limit, or internet restrictions.

plan for every family to use

ending with a personalized account:

my current setup is: parents control the time, all devices in the house that can't be disconnected are added to the parent's list, behavior management blocks video and web pages, and WiFi timer is not enabled. The child fussed for two days, but by the third day he got used to it. At nine o'clock, he disconnected from the internet, and by nine thirty, he was sleepy. Tools are rigid; once the rules are set, don't give up—they're more effective than any function.