Dadget U220: An affordable robot window cleaner with dual sprays

The latest new robotic window cleaner to be reviewed is the Dadget U220. It's the top model in the brand's U-series. It boasts the same advantages as its predecessors: a stylish design, slim body, and well-equipped components, all while remaining affordable at $65 to $70. However, as befits a higher-end model, this robot has a distinct advantage. In this case, it's a dual-spray system that delivers cleaning fluid to the surface. Water is delivered in both directions, improving the quality of window cleaning and keeping the cleaning cloths moist throughout the entire cleaning cycle. Below, I'll thoroughly test the Dadget U220, highlighting its pros and cons based on my test results, and then share my personal opinion. Let's get started!

Equipment

The window cleaning robot arrived in this branded box:

The package includes:

1. The robot itself with a safety rope attached.
2. Power adapter with cord for connection to the network.
3. Remote control with batteries.
4. A water bottle with a sprayer and a replaceable spout for pouring water into the robot's tank.
5. Set of 20 reusable microfiber cloths.
6. Two spare cleaning rings.
7. Operating instructions translated into Russian.
8. Folding brush for washing smooth surfaces.

In terms of equipment, the Dajet, as always, pleases!

Appearance

Let's take a look at the design of the Dadget U220. This oval-shaped window cleaning robot is available in white. It features a brushless motor with an extended lifespan and low noise levels.

The case height is 67 mm. It's the tallest in the U-series, but still slim compared to its competitors.

A safety cable and a non-detachable power cord extend from the body. A power on/off button and a robot status indicator light are located on top.

The same light indicators are visible on the back side between the napkins. The familiar round napkins are attached to rings held in place by mechanical fasteners.

 

Between the wipes inside the body there is a water tank with a sealed lid.

Water is supplied to the surface through two nozzles located on different sides of the robot.

The included universal brush has a folding mechanism. The brush itself is equipped with a hinge that rotates in one plane.

Technical specifications

The main characteristics of the Gadget U220, as stated by the manufacturer, are displayed on the screen:

• Backup battery: Li-Ion, 650 mAh.
• Power consumption: 90 W.
• Battery life: up to 20 min.
• Dimensions: 293*145*67 mm.
• Water tank: 50 ml.
• Glass cleaning speed: 1 sq.m./4 min.
• Maximum size of one glass: height 4 m, width 4 m.
• Minimum size of one glass: height 50 cm, width 50 cm.
• Weight: 1116 g.

Compared to its U-series predecessors, the robot is slightly taller and therefore heavier. Its power, battery life, and other parameters remain unchanged.

Functional capabilities

Regarding the robot's capabilities, it is controlled via a remote control. It includes all standard functions, such as stopping the cleaning process, starting/pausing, manually controlling the robot, activating the automatic water spray, manual spraying, and three automatic modes: "up then down," "left then down," and "right then down." There is no dual-pass mode.

Testing

A detailed video review of the Gadget U220, including all tests, has already been prepared and published on the channel:

Navigation and window cleaning quality

It's time to test the U220's capabilities in action—cleaning windows from the outside. Our windows were washed a couple of months ago, so there's not much dirt, but the results will still be noticeable. We'll also see how the robot navigates.

Well, there are no complaints about the navigation: there are no visible gaps, and dust is thoroughly collected by the wipes. For the first run, it's best to run dry cleaning without water—this way, the robot will collect all the dust without smearing it across the glass. But on the second run, you can turn on the automatic water supply, and then the windows will not just be clean, but truly washed.

Let's compare the condition of the windows before and after:

The robot was also able to clean a 38 cm wide window, while the stated minimum window size is 50 x 50 cm. So it's suitable for cleaning narrow windows as well.

There's a nuance that all robotic window cleaners have without exception: the wipes simply don't reach the corners of the window, so dirt remains there.

Application on other surfaces

I'd like to add that the Dadget U220 can be used to clean not only windows but also other smooth vertical surfaces, such as wall tiles, mirrors, or shower doors. However, there's a caveat with frameless surfaces. In my case, the robot didn't fall off the mirror, but a couple of times the holder got too close to the edge, and it felt like it would lose its grip any closer. Therefore, I personally don't recommend using it on frameless surfaces. Incidentally, Dadget itself gives a similar warning.

But on horizontal surfaces, the robot frankly feels out of place. On a countertop, for example, it moves erratically and doesn't work properly. However, the U220 isn't solely to blame here—most robotic cleaners can't handle such tasks.

Emergency mode

A few words about emergency mode. If you unplug the U220 during operation, it immediately starts emitting an alarm: the robot beeps and flashes a red light on both sides of the body. This combination of light and sound is necessary to alert you to the problem and remove the device from the surface before it decides to freefall.

Let me emphasize again: a safety rope is not an option, but a necessity. Especially when it comes to cleaning windows from the outside. Without it, the risk of falling due to improper use is too great.

Let's sum it up

I've thoroughly tested the Dadget U220 window cleaning robot and can now sum it up. I'll tell you what I really liked about it and where there were some quirks. Let's start with the pros:

1. High-quality window cleaning for minor stains.
2. Double spray function for liquid on the work surface.
3. Slim body allows the robot to be used on windows with bars.
4. Good navigation on windows of different sizes.
5. Suitable for washing narrow windows at least 38 cm wide.
6. The robot's versatility. It's suitable for cleaning not only windows, but also glass doors, mirrors, and wall tiles.
7. The package is great. For the price, a set of 20 replacement wipes and a universal brush is a great value!
8. Affordable price.
9. Warranty and service are included. And they offer a 3-year warranty, which is pretty cool!

As for the disadvantages, they are typical for this type of device:

1. It doesn't wash into the corners.
2. Does not work on horizontal surfaces.
3. Not suitable for washing frameless surfaces.

Ultimately, the advantages significantly outweigh the disadvantages inherent in most robotic window cleaners, so I have no reason not to recommend this robot. Furthermore, in my opinion, this is the most successful and optimal design for a robotic window cleaner. The cleaning module consists of two round cloths and provides a dual spray pattern in each direction as the robot moves. A comparative test of different window cleaning robots, published on the channel, confirms this.

On that note, I'd like to end this review. If you have any questions, please ask them in the comments. Happy shopping, everyone. Bye!