DFRobot Gravity: Analog Adjustable Infrared Proximity Sensor

DFRobot Gravity: Analog Adjustable Infrared Proximity Sensor

Marsoni

M251S

$10.00

Get it in 3 business days with 1 day shipping. Friday, May 29

DFRobot Gravity: Analog Adjustable Infrared Proximity SensorAnalog Adjustable Infrared Proximity Sensor This is an Analog infrared distance sensor. It has an adjustable detection range, 3cm 80cm. It is small, easy to use, assemble, and inexpensive. Useful for robotics, interactive media, industrial assembly line, etc. Infrared wave length is part of the Sun's natural light spectrum. While is a nice fit for indoor projects, outdoors with plenty of sunlight and reflective surfaces on it's sight is not adviced.

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We offer a 30-day return/exchange service after receiving.
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I purchased these for their tall height to go in the ground, but they are too short and I hit my head on them. The height shown in Amazon's pictures does not match the actual height for the 9- and 10-foot umbrella. The heights are something more like 90-95 inches rather than the 108 and 120 inches indicated. The 9- and 10-foot umbrella description seems to refer to the diameter of the umbrella instead. I have returned them, but Amazon has not yet corrected the listing.

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Reviewed in the United States on May 5, 2026

Verified Purchase

Texas Gal

Omaha, US

★★★★★ 5

First use was great!

I've used it just the one time today. I had previously "edged" with a string weedwhacker, so while the grass was cut back some, there wasn't a trench dug out. I did a gentle push and pull, taking on about 18" at a time to get a new trench dug next to the sidewalk edge. It did a great job! The entire unit was much heavier and sturdy looking than I was afraid it would be for the price, so pleasantly surprised. Assembly wasn't complicated, but it did take two of us to hold it steady because getting the screws to seat in the square hole and not have the cord in the way was a bit tricky. I'm a 70+ lady, not large and not athletic, but I was able to handle this edger with ease. Now, to see how long it lasts!

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Reviewed in the United States on July 11, 2025

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James E Morris

Carnegie, US

★★★★★ 5

Not expensive

Gets the job done

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Reviewed in the United States on April 27, 2026

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Katy

Cuba, US

★★★★★ 4

Great Yard Helper!

So easy to use and affordable! This edger is a great time saver, easy to operate, and relatively easy to adjust although you may need a pliers or screwdriver to help with the adjustment levels, but its not difficult. I would have given this 5 stars but just one thing that is a sticking point for me is I wish this had its own stand or hanger because of its odd shape, it doesn't necessarily balance upright too well. It’s long and the guide wheel in the front sticks out. So, it is always awkward to get it tidy in the garage when not in use. Now maybe this is what it's like for landscapers…I’m not a professional. Just a homeowner doing my own upkeep. With what this costs, I’ll figure it out, and is worth the money.

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Reviewed in the United States on December 30, 2024

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Dan Y

Omaha, US

★★★★★ 5

Easy to use

Easy to assemble. Works as advertised

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Reviewed in the United States on April 14, 2026