Xiaomi infrared sensor for the tap – save water and money?

Hey, guys! Just a heads up: The linked offer is already a bit older and the price of the gadget might have changed or it might not be available anymore.

Operate the faucet freehand and save water at the same time. What is standard on many public toilets, you can easily furnish your own bathroom or kitchen with an attachment:  the infrared sensor for the tap.

Xiaomi Zajia tap adapter sink

Why an “automatic tap”?

We stumbled across this product while browsing youpin.mi.com. Even if the idea is not entirely new, this model is probably interesting because of the price. While comparable attachements are often at $30 and more, and fittings with integrated sensor sometimes cost $50-100 or more, this attachment currently does not cost $16 in China. Does this make it interesting?

An infrared sensor is installed, which detects movements and then lets water flow. If you hold your hands under the tap, water flows until you take it away again. This not only saves you a single hand movement, but also reduces water consumption in the long term.

Xiaomi Zajia Faucet Adapter Pepper

Occasionally, however, you also need continuous running water if you want to fill a glass/bottle, for example. For this you can adjust the water level by moving the second sensor on the side. Move your hand past the sensor once and water will run until you trigger the sensor again.


The previous installation should be completed in a few simple steps. According to the manufacturer and the shop, the installation is “so simple that even women can do it”. With this statement, the part sells itself almost on its own. In China some things are probably still different than with us.

There are a total of six different adapters included in order to have the right one for every tap. There are three each with external and internal threads.

Xiaomi Zajia Faucet Adapter

The actual faucet must of course be turned on. The attachment itself runs on a rechargeable battery that can be charged via a micro-USB cable. According to the manufacturer, the battery will last for up to six months.

Do you need that?

This question remains. Do you want to install such a sensor? After all, it should fit in best with the bathroom or fittings. In white, the adapter looks nicer than the worst metal alternatives, but it doesn’t make the tap nicer. Of course there has to be enough space. And whether the water saving recovers the purchase price, we also can not judge.

Xiaomi Zajia tap adapter installation

What do you think of that? Have you always wanted an automatic faucet? Have you already installed something like this in your faucet? And what price is appropriate for such a gadget? Let us know.

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After joining the team in late 2015 I quickly fell in love with aerial photography. Today I review most of our drones. I'm also interested in gaming related gadgets.