Infrared sensor E3T-FD11/FD13/E3T-ST12/ST22 for through-diffuse reflection photoelectric switch. Economical model
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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Jessica
Cuba, US
★★★★★ 5
Wow Great Deal!
Color: Black
I have been using this chair for a month now and I am honestly impressed for the price I paid. I work from home so am using this chair 24/7. I had no issues with assembling it myself as a 35 year old female. Instructions were simple to follow and took me maybe 30 minutes to put together. Its sturdy and comfortable. I appreciate the padded arms and the seat bottom is also a nice thick cushion. Added bonus for the head rest and that it is adjustable. Definitely recommend.
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Reviewed in the United States on March 27, 2026
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eHackster
Waukegan, US
★★★★★ 5
Very comfortable office chair
Color: Black
This ergonomic office chair is very comfortable and has good lumbar support and a nice headrest. It includes all the necessary tools and takes about 20 minutes to fully assemble. The height adjust and recline features of the chair work smoothly and quietly. The seat cushion is nice and comfortable. The height-adjustable armrest is also a nice features of the chair. Overall, this ergonomic office chair provides relaxing comfort during long hours sitting with support for your bottom, back, head and arms. It's a good value for the price.
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Reviewed in the United States on February 21, 2026
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Tyler montano
Bozeman, US
★★★★★ 4
Good quality and arrived quickly
Color: Black
I was very pleased with how easy this chair was to set up. Affordable, arrived quickly. The only reason it isn’t 5/5 is because on of the arms had a small dent, possibly due to not enough bubble wrap during shipping. Other than that, the quality is great.
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Reviewed in the United States on February 6, 2026
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William Hoo
New York, US
★★★★★ 5
Awesome chair so far
Color: Black
My old chair can go in the trash immediately because it set the bar so low (picked up from a giveaway - squeaked anytime it's leaned on, always sinking upon sitting on it). This Ergonomic chair blew it out of the water. Happy with this purchase. This chair took me an hour to assemble, which I expected. It feels extremely sturdy and comfortable. Lumbar support feels great! I love the various adjustability options this chair offers. Hope it lasts for many years. By the way, I am 175 lbs, 5'10".
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Reviewed in the United States on January 3, 2026
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Denisha
Los Angeles, US
★★★★★ 5
Great product
Color: Black, Color: Black
The directions were so easy to follow i was able to set up the chair in under an hour its very comfortable and perfect highly recommend
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Reviewed in the United States on March 24, 2026

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