SKU: 18068034643

Infrared sensor E3T-FD11/FD13/E3T-ST12/ST22 for through-diffuse reflection photoelectric switch. Economical model

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Description

Infrared sensor E3T-FD11/FD13/E3T-ST12/ST22 for through-diffuse reflection photoelectric switch. Economical modelE3T FD11 FD13 Type1: Both are diffuse reflection type infrared sensors. The E3T FD11 is a flat type sensor, and the E3T FD13 belongs to the same series with similar functions but may have differences in some specific parameters or installation methods. Detection range3: The detection distance of the E3T FD11 is 5 30mm. There is no specific information on the detection range of the E3T FD13, but it is presumably within a similar range. Electrical

E3T - FD11/FD13

  • Type1: Both are diffuse - reflection - type infrared sensors. The E3T - FD11 is a flat - type sensor, and the E3T - FD13 belongs to the same series with similar functions but may have differences in some specific parameters or installation methods.
  • Detection range3: The detection distance of the E3T - FD11 is 5 - 30mm. There is no specific information on the detection range of the E3T - FD13, but it is presumably within a similar range.
  • Electrical characteristics: They usually have NPN or PNP output forms to meet different circuit connection needs1. For example, the E3T - FD11 has an NPN - output type, which outputs a low - level signal when detecting an object and a high - level signal in the absence of detection.

E3T - ST12/ST22

  • Type: These are through - beam photoelectric switch sensors3. The E3T - ST12 and E3T - ST22 have similar structures and functions, but there may be some differences in details such as size, shape, and pins.
  • Detection range: There is no specific detection - range data provided for these two models. However, as through - beam photoelectric switches, they generally have a longer detection distance than diffuse - reflection - type sensors, usually ranging from several centimeters to several meters.
  • Working principle: The through - beam photoelectric switch consists of a transmitter and a receiver. The transmitter emits infrared light, and the receiver receives the infrared light. When an object blocks the infrared light path between the transmitter and the receiver, the receiver's received light signal changes, triggering an output signal change to indicate the presence of an object.
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SKU: 18068034643

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Piano Man
Alexandria, US
★★★★★ 1
Made mostly of POLYPROPYLENE PLASTIC and should not be injested.
Size: 8 Inch - 2 Pack, Color: Tree Branch
BAD PRODUCT. DO NOT BUY THESE FOR YOUR DOG. They are made mostly of POLYPROPYLENE PLASTIC. It even says on the package - "CAUTION: Product is not intended to be eaten or ingested. If you believe your pet has swallowed a piece, please take away and contact veterinarian if needed. Our dachshund went to town on one of these and had diarrhea for two days and cost us several hundred dollars in vet bills to do x-rays and medicine for the poor dog. What do you think a dog is going to do with a dog chew? Just find another product. This one isn't worth it.
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Reviewed in the United States on May 26, 2026
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Amazon Customer
Charlottesville, US
★★★★★ 5
Loved by both my pup and I! I can't say enough good things!!
Size: Large, Number of Items: 1
My lab puppy absolutely loves this! And so do I. My 5 month old lab puppy loves to play with us and is not so good at playing by himself. Though he is getting a little better. I use this when we need to keep him occupied or when we need a little break. I bought this for him when we first got him at about 2 months old; even then he had no problems figuring it out. Depending on how much food I put in it, this will keep him busy for quite awhile. My puppy does not usually have much of an attention span, he is always jumping from one toy, bone, or chew to another. But with this I know I can consistently depend on him being entertained for at least 15 to 30 minutes, again, depending on how much food I put in there. "Bob" as we call him, is very well made. I purchased the large one and it holds about 2 cups of food. The yellow top screws off so that you can pour the food in, there is an adjustable opening so if you want to make it harder for your dog you can adjust it and he will have to work harder to get the food out. It screws on quite tight and has never come off while my dog is playing with it even when he carries it around by the top. There is another opening towards the bottom where the food comes out that is also adjustable depending on how easy you want it to be or how big the food is that you are using. Both openings are pretty large and I have never had an issue with putting things in there. I know some people use it to put their dog's food in, as my dog is self fed I have never done that. But I do use Cheerios and all kinds of other cereals and treats but mainly I use other "special" dog foods. I buy moist and dry dog foods that look like they may taste good and use them as treats. My dog thinks he is getting treats and never knows the difference, he loves them. It's healthier than feeding him lots of treats and also a lot cheaper. Using the "Bob" not only keeps him independently entertained but also helps to tire him out. It can be a bit loud as I have tile floors but it is not that bad. It is constructed extremely well. My pup plays very rough with it, he bats it around into walls, furniture etc., drops it down steps, it has taken a beating but it has stood up to my dog's abuse, where many of his other toys have not made it. It is very easy to clean. I plan on purchasing another one for my sister-in-law's pig. She is 70 pounds over weight and hates to move around but obviously loves food. I think that putting her food inside will be just the motivation she needs. And it is so well made that I don't have to worry about giving it to her!
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Reviewed in the United States on August 10, 2014
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Tillea Hurinenko
Chelsea, US
★★★★★ 5
Favorite toy
Size: Small, Number of Items: 1, Size: Small, Number of Items: 1
This is my dog’s absolute favorite toy. When I fill it, it’ll keep him busy for up to an hour, and even when I don’t fill it, he likes to tip it around to check for missed treats quite often. It’s super sturdy, and just the right size for him (20 lb mini schnauzer).
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Reviewed in the United States on April 18, 2026
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Jessica Ward
Cuba, US
★★★★★ 5
Perfect Enrichment for my Puppy
Size: Small, Number of Items: 1
Amazing!! Super durable and exactly what I was looking for! My dog loves this and it keeps him very busy! It fits about half a cup inside and can be used anywhere.
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Reviewed in the United States on June 1, 2026
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Gerald B
Omaha, US
★★★★★ 4
Can't be clean but provides fun.
Size: Small, Number of Items: 1
It's well made and our pup really does like it. The only thing is, it doesn't fully open to clean it out. I wouldn't buy it again for that fact. It's tough plastic and sturdy.
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Reviewed in the United States on April 13, 2026

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