Can a Xiaomi router serve as a Bluetooth gateway? The thermometer and humidity meter are always offline. I checked the 31.1 backend, and half of the models didn't have this feature at all

Last month, I added a Mijia thermometer to the greenery corner on the

balcony. The data was diligently for the first two days, but on the third day, I started playing with the Mijia app: occasionally a bit of gray during the day, disconnected at midnight, and checked in the morning, the humidity curve was broken for over four hours last night.

I didn't suspect the device was broken; what I suspected was that it couldn't reach the 'gateway.' The thermo-hygrometer 2 is the Bluetooth version. Since you can't access the internet yourself, you have to rely on something at home with a Bluetooth gateway to transfer data to the cloud for you. In my house, this has always been done by the Xiaoai Speaker Pro in the living room, but the balcony and living room are separated by a wall and a sliding door that stays closed all year round. It's fine during the day, but at night, when the door is closed, the signal trembles.

router is on 24/7 anyway, and it's placed right in the middle of the house, making it much more decent than a speaker. So I thought: Can Xiaomi routers handle this Bluetooth gateway as well? After browsing the backend and specs page all night, the answer was even more painful than I expected—Xiaomi routers do have half the models capable of this, while the other half don't have the hardware at all. My one happens to be in the latter half.

to get straight to the point: half of the models have it, half don't

put the conclusion first, so you don't have to turn the 31.1 backend upside down:

rule is simple: look at the price range and whether there are of the word 'central zone.' Mid-to-high-end models clearly list "built-in central gateway" and "Bluetooth Mesh gateway" in their selling points; Not listing the main 100-yuan model isn't hiding anything, but because at this price point, it can't fit into this set. So, the answer to the question "Can a Xiaomi router serve as a Bluetooth gateway" is never a yes or no; it first depends on which device you have.

What is the

Bluetooth gateway for: Bluetooth devices cannot access the internet on their own

at home gets a headache just by seeing the word "gateway," so I gave her an analogy. Smart devices at home fall into two types: cameras and vacuum cleaners with built-in WiFi modules, which means each person has a SIM card in their pocket and can connect to the router for internet access; Thermometers, magnetic magnets, Bluetooth door locks—to save voltage, they don't install a 'card' and lose contact within about ten meters of home—you need something standing inside, one end receiving Bluetooth, the other running broadband, to move data to the cloud. This double-ended device is the Bluetooth gateway.

how can you tell if the device in your hand is Bluetooth? Look at two places: the connection section on the product page says "Bluetooth"; For battery-powered stations that can last half a year, 90% are still — WiFi stations consume electricity, and button batteries simply can't fill the battery. My home temperature and humidity meter has a wall-mounted battery that lasts a year. Just from that alone, you should think it's the Bluetooth version. Blame me for not thinking when I bought it.

Mijia ecosystem has more features than you might think: Xiaoai speakers with gateways, multi-mode gateways, some devices with screens, some smart sockets and switches with built-in Bluetooth Mesh gateways, plus high-end routers with hubs. I previously counted how 49 smart devices at home were networked. Back then, all sensors were integrated into Zigbee and used multi-mode gateways, each device counting 28 devices. accounts were all recorded in the networking section, . This time, the trouble was that the new thermo-hygrometer was a pure Bluetooth version, so there was no choice.

to clarify a common issue: how to troubleshoot Mi Home devices showing as offline. I once wrote an article about the number of disconnected WiFi devices, checking the signal, channels, and router operating time. the entire sequence is in the offline troubleshooting . Bluetooth sub-device disconnections are a different logic: 90% likely because the gateway is too far away or the gateway shuts off power itself. The troubleshooting direction is completely different, so don't just blindly follow the WiFi article.

I checked the backend transcript: all three machines had no

check my main AX3000T first." 31.1 In the background, you can scroll from Common Settings to Advanced settings, but there is no mention of 'Bluetooth'; I then opened the Mijia App's router plugin and opened the toolbox with over a dozen tools one by one—anti-internet penetration, WiFi toolbox, and child control were all present. when reviewing the toolbox back then, these three were the most commonly used , but the Bluetooth gateway was absent.

still unwilling to give up, I asked my cousin, who uses the BE3600, again. His car was a white 2.5G version, and wrote a special about it when he picked out the version. When asked to flip through the product specs page, there was no mention of "Bluetooth" from start to finish. As for the CR8809 I found, the Telecom custom version, its features are even more heavily cut than the retail version. the bargain hunt was explained in that article, is even more impossible.

I only looked up the information after all three machines were wiped out, and that's how I found the table above. Simply put, this feature is treated the same as a 2.5G port and USB 3.0, making it a differentiating selling point for mid-to-high-end models—something you won't find in the hundred-yuan price range. If you can't find it, don't force it. It's not that you don't know how to find it, it's that the machine really doesn't have one.

three things secretly acting as gateways at home

the router can't be counted on, so you just go back and ask who at home is doing this job. After the review, I found that there are only three types that can be topped.

The first category is the Xiaoai speaker with a gateway. My speaker Pro has been moving data for Bluetooth door locks and this thermo-hygrometer. When I picked a lock for my mother-in-law's house before, I got a free gateway thanks to it. The Bluetooth version's battery life in one year is three times that of the WiFi version, so the choice of lock is in the door lock section. Its problem is the position: speakers are meant for listening, so you definitely place a TV cabinet in the living room, while Bluetooth devices are often hung at both ends of the house, and the walls in between shake as soon as they get too big.

the second category is multi-mode gateway , which uses both Zigbee and Bluetooth, standing alone at the end. If you have many sensors at home, that's the right path, but you have to spend the cost of a gateway. By the way, a gateway can carry dozens of Bluetooth sub-devices at the same time without any pressure; the quantity is never a concern, but the distance and walls are always the main concerns.

the third type is the most concealed: built-in Bluetooth Mesh gateways in smart sockets and switches, . It has some features others don't have—plug in wherever the signal is weak, which is like adding a relay node to the Bluetooth network, costing just a few dozen yuan to add a new chip. This time, my solution was this: I added a smart outlet with a gateway to the balcony, so the thermometer data could be conveniently connected to the cloud, and the disconnection would disappear instantly at midnight.

really want the router to do this too: choose models with a 'hub'

if you happen to need to change routers or have a bunch of Bluetooth devices at home, going straight to a model with a hub is definitely a one-step solution. The official BE7200 Pro can carry about 300 Bluetooth sub-devices, and even after network disconnection, local linkage continues to run—this is the true value of the 'hub' concept. A regular Bluetooth gateway would crash when disconnected. The BE6500 Pro hub gateway version basically includes a hub in the router that costs just over 300 yuan per unit, making it a good deal.

but swapping out the AX3000T just for the Bluetooth gateway? I won't do it. My unit has been used for two years, and the gigabit broadband runs steadily. Shutting down a thermometer is like using a high-range gun to shoot mosquitoes. The foundation after two years of use is in the actual test article. When there are so many devices that gateways fight every day, choose according to the three-tier budget article and treat "whether there's a hub" as a criterion and add it to the list.

there's a physics rule to tell you in advance: Bluetooth also runs 2.4GHz, but it still fails when passing through walls. A good router location is an advantage when it comes to Bluetooth, but don't expect it to reach the balcony end through two load-bearing walls. If you really run into a dead end, adding a gateway socket as a repeater is much cheaper than moving a router—the 2.4GHz issue when discussing channels before.

Taking Positions: Four Situations, Four Approaches

finish with a clear order: first check if the device is Bluetooth, then check who is acting as the gateway at home, measure the distance and walls, add nodes if it's not enough, and finally it's time to replace the router. A thermometer that costs thirty-nine yuan isn't worth adding a 300-yuan gateway, let alone replacing it with a 500-yuan router.