**I. Introduction**
Have you ever experienced a leak from the ceiling above? I have had two such incidents since I got married nine years ago. The first time was because I forgot to turn off the tap, and the second happened when the kitchen liner (which had been in use for eight years) broke. Fortunately, our neighbors below were very kind. At that time, their family had moved out, leaving the rooms empty for their children and grandchildren. Since they hadn’t renovated, there wasn’t much damage on either side.
Recently, we moved to a new neighborhood, and the building is currently under renovation. Also, we just bought a millet water purifier and modified the kitchen’s water pipe. My wife reminded me to be careful not to cause any damage to others, so I started researching how to detect leaks.
For more details about the millet water purifier, you can check the original article I shared earlier. Now, let's talk about different solutions for home flooding alarms.
**II. Home Flooding Alarm Solutions**
Home flooding alarm systems can generally be divided into three parts: detection, alarm, and response.
Flood detection is relatively simple. Usually, only the kitchen and bathroom are at risk of leaks, and the area involved is limited. By placing electrode probes in the right positions and checking for electrical connections, you can determine if there is a leak. This method is reliable, sensitive, and cost-effective. There are two types: one is a single-unit detector, where the probe is integrated with the host, and the other is a split-type system, where the probe is separate from the host, allowing for smaller and more flexible placement.
The alarm part is also straightforward. Once the electrodes detect water, they send a signal—either through wired or wireless transmission—to trigger an alarm. Some systems can alert your phone via SMS, while others simply sound a siren. The price varies depending on the type of communication used.
Finally, water immersion treatment involves connecting the alarm system to a solenoid valve that automatically shuts off the water supply once a leak is detected. This is a more advanced and expensive solution.
There are various smart leak detectors available on the market. For example, Aqara’s Water Immersion Sensor works wirelessly with a gateway device, triggering alarms and sending notifications to your phone. It can even shut off the water supply by connecting to a solenoid valve. However, these systems are quite expensive.
Green Rice, another brand, recently launched a flood sensor priced at 99 yuan, but it requires a Mi Family multi-function gateway, which costs an additional 149 yuan. Plus, you need to buy a solenoid valve separately (around 30 yuan), and possibly a remote control switch to manage it. In total, this setup could cost around 407 yuan. Is it worth it? That’s up to you.
Another option is Hikvision Fluorite T10, which is cheaper—around 300 yuan—but still needs a solenoid valve.
**III. My Plan**
Instead of going for high-end smart solutions, I opted for a more budget-friendly and practical approach. I looked for simple, easy-to-install devices from Taobao.
There are several options: some are fully integrated, with the probe and host together, while others are split-type, making them easier to install in tight spaces. Since my kitchen cabinet under the floor has limited space and the pipes are close to the ground, I needed something compact.
After searching, I found a split-type system with a small probe and a long power cable. It uses batteries, and the seller claimed a 10-year standby time! Although I’m skeptical, the price was only 38 yuan for a 3-meter cable, so I gave it a try.
I installed it inside the cabinet, using the existing hinge mechanism for easy access. The metal contacts are very sensitive—just a little moisture triggers the alarm.
**IV. Experience and Thoughts**
Installation was simple. I used double-sided tape to stick the host in place, and the cable length was adjustable. The alarm is loud, and the test button works well. I even tested it after replacing the faucet, and it immediately triggered the alarm.
Advantages include its small size, long battery life, affordability, and flexibility. However, it has some downsides. If no one is around, the alarm might go unnoticed. Also, the 10-year battery claim seems exaggerated.
**V. Conclusion**
This small project shows how even simple solutions can be effective. I admire the time and effort people put into writing detailed articles like this.
In today’s world, AI and smart homes are all the rage, but not everything needs to be super advanced. Sometimes, a low-cost, practical solution is more useful than a high-tech gadget.
Smart home technology is still in its bubble phase. Many products are ahead of actual demand. As we move forward, we’ll see more examples of this trend.
Well, that’s my story. If you enjoyed it, feel free to give it a thumbs-up or leave a comment. Thanks for reading!
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