“The story begins many months ago with the idea of installing water leak detectors in our smart home.
Water damage occurs far more frequently than fires—accounting for 60 percent of all insurance claims—whereas fires make up only 10 to 15 percent.
Up to that point, we had used several smart sensors from Eve Systems, but we were largely dissatisfied with them. Their water detector costs 100 euros, requires its own power outlet, and relies on a two-meter-long sensor cable that must be laid across the area being monitored. Equipping every sink and the laundry/utility basement in this way seemed both too expensive and too cumbersome.
Meanwhile, we had already had a positive experience with the G5 Pro surveillance camera from Aqara, and advertisements for the Chinese manufacturer’s affordable sensors kept popping up on AliExpress.
So, we took the plunge: we bought half a dozen water detectors from China—costing just a few euros apiece—and added some door and window sensors, as well as a few temperature and humidity monitors, to our cart. AliExpress didn’t just ship the goods; they also sent about 40 emails throughout the shipping process. The entire order arrived within two weeks.
In Germany, we purchased the corresponding Aqara M3 smart home hub for 120 euros [1]. It supports all the wireless protocols used in a connected home—including Wi-Fi, Bluetooth, Zigbee, Thread, and Matter—and integrates with smart home ecosystems from Apple, Amazon, Google, Samsung, and Home Assistant. The hub looks like a streaming device (similar to an Apple TV), requires a power outlet, and even features a built-in speaker for issuing alerts.
A few weeks later, we had installed a water sensor under every sink, as well as in the heating and laundry basement. The sensors are slightly larger and thicker than a two-euro coin and detect water using two contacts on their underside. Then, the real test arrived.
One Sunday, the sensor triggered an alarm—not just via the smartphone app, but also audibly throughout the house through the speaker in the hub. After dismissing the alarm, we discovered that a faucet in the guest bathroom—installed by a plumber just a few days earlier—was indeed dripping. It was only a small amount, but the area around the sensor was damp; the device had done its job perfectly. We also received an alarm in the kitchen, and it was justified. There have been no false alarms over the past few weeks; we are very satisfied. When you add up the cost of the hub and the sensors, it’s an affordable, discreet, and simple way to protect any potentially vulnerable area in your home.
We have the Hub M3 set up in the center of our house, where it effortlessly connects not only the water leak detectors but also temperature and humidity sensors. We’ve installed half a dozen of these, allowing us to see immediately when humidity levels spike—for instance, in the exercise room after an intense workout, or in the bathroom after a shower. Unlike the Eve Energy sensors we used previously, all data from every sensor is instantly accessible within the app; there’s no need to wait for the data to be retrieved via Bluetooth.
Another difference: Aqara allows for push notifications whenever a sensor detects that specific thresholds have been exceeded. If, for example, someone repeatedly forgets to ventilate the bathroom and the humidity rises above 70 percent, a notification is sent straight to your phone. While you have to set this up using automation rules, the app is highly flexible—especially in how it distinguishes between standard push notifications and the type of alerts that trigger the aforementioned speaker.
Integration with Apple HomeKit also works seamlessly in our day-to-day use. Just for fun, we the T1 vibration sensor—also slightly larger than a coin—was attached to the underside of a step on the basement stairs. A rule was programmed in Apple HomeKit: if the T1 detects vibration at night—indicating someone is walking up the basement stairs—the bedroom light turns on. We also tried attaching the sensor to the flap of our mailbox, but it couldn't bridge the wireless distance.
A new addition is the P100 multisensor, which, unlike standard door and window sensors, does not require a second component to detect an opening event. The sensor itself is sensitive enough to detect movement, falls, vibrations, and tilting. This makes it suitable for more than just windows; for example, it can monitor a mailbox flap, the opening of a drawer, or the movement of a pill organizer. The P100 costs 30 euros, and its sensitivity is adjustable. If you choose not to use it via Zigbee with an Aqara hub, you can switch it to "Thread" mode. Once in this mode, it is compatible with the smart home ecosystems of Google, Apple, Samsung, and Amazon. In our testing, switching settings via the app required several attempts before it worked.
For the sake of completeness, it is worth mentioning that, in addition to smart door locks and doorbells, Aqara also manufactures presence sensors—one of which we featured here in 2023. Presence sensors are superior to standard motion detectors; they can detect even the slightest movements, allowing them to reliably determine whether a person is present. Furthermore, they can identify the specific location of one or more individuals, as well as their direction of movement and distance. These clever products from China have been on the market for a decade.
While one might have concerns regarding data privacy and cloud connectivity, the price-performance ratio—and, above all, the reliability of the devices we have tested so far—is impressive.” [2]
1. The Aqara Water Leak Sensor communicates directly with the Aqara Hub M3 via low-power Zigbee wireless technology.
2. Tönt, wenn's tropft: Mit cleveren Sensoren fürs vernetzte Heim lässt sich nicht nur ein Wasserschaden schnell entdecken. Neue Produkte von Aqara im Test. Frankfurter Allgemeine Zeitung; Frankfurt. 04 Aug 2026: T4. Von Michael Spehr
Komentarų nėra:
Rašyti komentarą