How to set WiFi timer on a Mercury router? The internet is automatically cut off at the scheduled time, and I finally managed to stop the child sneaking around on their phone late at night

things are like this. My child is in eighth grade, and we agreed on the rule to hand over his phone at 10:30 p.m. For a while, I noticed there was still activity in his room every early morning. I went over and saw the screen in the blanket lit up, and he was happily gaming—his phone was his backup device, so he had no trouble with the home WiFi. If you confiscate one, there's another—I can't collect them all.

later remembered that the backend of the Mercury D191G at home seemed to have a timer function, so I checked it out and found it really did. After setting it up, the WiFi at home would automatically disconnect and restore itself in the morning. After a month of persistence, my child's routine finally got back on track. This article explains clearly how to set up this feature, the two pitfalls I've encountered, and which families should avoid using it.

clarify first: WiFi timer switching and scheduled restart are two different things

many people confuse these two, so let's break them apart first. A scheduled restart causes the router to lose power and start over, fixing issues like lag or frequent device disconnections after prolonged use. I wrote about it in my article Xiaomi router scheduled restart, which is a "router health check."

WiFi timer switch does something completely different: the router itself is constantly running, dialing up nonstop, the cable port is normal, but the wireless signal is turned off at the right time. When the time comes, you search for WiFi, but you can't find the name on your home, and your phone can't even connect if you want to. It enforces 'no wireless internet at this point'—it's a disciplinary tool, not a maintenance tool.

in a word: Restart the router on a scheduled timer, and switch it on and off at a timer to fix the user. My need is clearly the latter.

How to set up the

Mercury backend: two paths: web and app

Mercury's feature entry is a bit convoluted, and the new and old firmware locations are different. I've touched both devices, and the path is listed below.

the path to web pages: your browser to enter melogin.cn or directly enter 192.168.0.1 (if it won't open, I wrote an article about troubleshooting melogin.cn that won't open, most likely stuck in DNS). After logging in, tap "Device Management" at the top, scroll down to find "Wireless Timer Settings," and that's it. My D191G looks like this: select the active frequency band above (2.4G and 5G are two independent rules), then check the time zone below. You can set it different each day.

App this way: After binding the router the Mercury Router App, scroll through the "Toolbox" at the bottom of the homepage to find a "WiFi Timer Switch." The interface is cleaner than the web version; just check the switch and drag the time period. The advantage of the app is that if you want to turn on WiFi temporarily at night, you don't have to get up to turn on your computer—just tap on your phone and restore it.

if you can't find either of these places, there are two possibilities: first, the firmware is too old—upgrading usually solves it; Second, the menu names I remember don't match yours. The interface names of Mercury differ from era to era. If you look up keywords like "scheduler," "wireless timer," and "healthy internet," it almost always matches.

my settings for reference: closing at 23:00 and 6:30 on Sunday and Thursday, and closing at 24:00 on Friday and Saturday. Remember to click save after setting it up. The first time I set it up, I just forked the page, thinking it was saved. That night, my child played without hesitation, but the next day when I checked, it didn't work at all.

set it up and I messed up in the first week: the only thing disconnected was the WiFi, and the network cable was still on

On the first night the

rules took effect, I slept soundly, but on the second night, I was proven wrong. Getting up in the middle of the night to use the bathroom, light shone through the crack in the child's door. Pushing the door open, the phone really had no internet. They had switched to a desktop, and a cable had been pulled from the corner of the wall all the way to the bedside, with the game login screen gleaming.

this is the most easily overlooked feature: it only turns off wireless, not wired . The router's LAN port forwards information when needed; whoever plugs in the network cable has the internet. It's good that my child is digitally blind, but he doesn't know I set it up and just thinks 'the WiFi is broken but the computer can still play.'

There are two

blocking methods. Physics School: Put away that network cable, lock the weak current box, and it's done. Tech Enthusiast: In the Mercury backend "Device Management," there's a "Internet Control" (some firmware calls it parental control). You can include the desktop MAC address and set a schedule similar to WiFi, with both wired and wireless connections disconnected. I've done both: shutting down the network cable is the main line of defense, controlling internet access is the insurance—to prevent another cable from coming out one day.

second pitfall is even scarier: cameras go offline in the middle of the night

a few days later, around 2 a.m., my phone popped up four or five notifications in a row: "Camera offline," "Bedroom sensor offline." I suddenly woke up, thinking the router at home was down. I went to the living room in the dark and saw the router indicator light was still working.

thought for two seconds before realizing: all three or four Mi devices at home are connected via WiFi. If I turn off WiFi on a scheduled timer, wouldn't they all be completely disconnected? From the app's perspective, everything looks gray, no different from a real accident. I later wrote about this pitfall in the Mi Home offline device troubleshooting article on how to distinguish between real and fake offline devices, but fundamentally, it was my timer switch that accidentally damaged them.

solutions are either nonexistent or a bit awkward: either connect devices like cameras to guest networks, with some firmware supporting separate guest network settings; Either I have few devices at home and just put up with it. Anyway, during internet off-grid times, whether the camera records cards depends on their model. Mine is blind when the internet goes off. If you really care, keep reading for more detailed methods.

can't be controlled in one go, switch to the one that only manages the kids

After two rounds of

spinning, I figured it out: the all-network timer is a rough tool, suitable for families who think "the whole family should sleep at this time." If there's one thing at home that can't be separated from the internet at night, it becomes a nuisance: NAS remote access, overtime video meetings, or elderly people with surveillance cameras in their rooms are not suitable for a one-size-fits-all approach.

this kind of family change approach: don't turn off the family's WiFi, just focus on the kids' devices. The device-level time management in the router's backend is for this: set schedules according to the device, disconnect only the device when it's time, and everything else at home stays as usual. As for how to set up devices and time slots, I wrote about the complete steps in my article on Visitor Network and Kids' Internet Time Management Mercury's backend logic is pretty much the same.

NAS Party must think even more. My Feiniu NAS occasionally needs to connect outside. If I turn off the WiFi in the middle of the night—luckily, the NAS is connected to the network cable and isn't affected. But if you disconnect the NAS's wireless bridge, remote connection will be lost and you'll only recover in the morning. Whether to access remotely or which channel to use can first check how many have connected to the home NAS then decide how to set up the switch.

Taking the Fact: Which

Finally, here's the order: First, think about whether you have devices at home that can't be without the internet at night; if so, go straight to device-level management; If not, set a full-network timing to eliminate network cable hazards; After setting the paper, I got up at midnight for the first three days to check and confirm that what should be cut off was cut off, and what shouldn't be cut is still alive, then I confidently handed in my paper.