SKU: 1861877768

Optical Variable Attenuator EVA50-80

Sale price$25.20 Regular price$28.00
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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

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Description

Optical Variable Attenuator EVA50-80Most compact and rugged portable attenuator on the market Three wavelengths: 1310nm 1490nm 1550nm Different attenuator range, 40dB, 60dB or 80dB Can save current value as reference Can save 10 tracks attenuation value Memorize the value after instruments shut down Energy save mode One year warranty and Three year recommended calibration interval Model EVA50 40 EVA50 60 EVA50 80 Attenuating Range 40 dB (SM) 60 dB (SM) 80 dB (SM) Calibrated Wavelengths

Most compact and rugged portable attenuator on the market

Three wavelengths: 1310nm / 1490nm / 1550nm

Different attenuator range, 40dB, 60dB or 80dB

Can save current value as reference

Can save 10 tracks attenuation value

Memorize the value after instruments shut down

Energy save mode

One-year warranty and Three-year recommended calibration interval

Model EVA50-40 EVA50-60 EVA50-80
Attenuating Range 40 dB (SM) 60 dB (SM) 80 dB (SM)
Calibrated Wavelengths 1310nm / 1490nm / 1550nm
Fiber Mode SM
Attenuating Mode Digital
Display Resolving Power 0.1dB
Display LCD, 128*64
Max Input Power + 21 dBm
Return Loss* 40 dB
Insertion Loss* 2.5 dB
Connector FC/PC (or customize)
Uncertainty ± 0.5 dB
Repeatability* ± 0.2 dB
RS-232 Optional
Auto Power Off No operation in 10 minutes (can be canceled), Low battery energy
Battery Charge Yes
Operate Time Above 20 hours
Power Supply 3 * AA batteries or AC/DC adapter

* at 20±3℃, CW, with FC/PC connector,1550nm

Size(H*W*D) 190mm * 90mm * 40mm
Weight/td> About 450g
Storage Temperature -20 -- +60°C, < 90%RH
Operating Temperature  -10 -- +50°C, < 90%RH

EVA50-XX

Model

EVA50-40 = 40dB

EVA50-60 = 60dB

EVA50-80 = 80dB

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 1861877768

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4.2 ★★★★★
Based on 30 reviews
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Paula S.
Dallas, US
★★★★★ 4
Great diapers, just a couple small issues
Size: Size 4, Unit Count: 150
Size 4 have been super reliable for my baby. They fit well, don’t sag, and handle active movement without leaking. The absorbency is great for daytime and short naps. My only minor complaint is that they can be a bit pricey compared to other brands, and occasionally the tabs feel a little stiff. Still, otherwise it’s a dependable diaper that I would definitely recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 14, 2025
B
Verified Purchase
Brianna
Chelsea, US
★★★★★ 5
Reliable Fit for Bigger ToddlersI’m
Size: Size 7, Unit Count: 88
These diapers are great quality and hold up really well for active toddlers. My son has always had thicker legs, and these have suited him really well without being too tight or causing irritation. He just turned two and is already in a size 7 (almost an 8), so sizing up has definitely been helpful for comfort and better coverage for US. The absorbency is consistent, and they stay in place—overall a very dependable choice.
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Reviewed in the United States on March 26, 2026
K
Verified Purchase
katie st. claire
Natrona Heights, US
★★★★★ 5
What a wonderful treat, loved by our very fussy dog!
Our very fussy Havanese absolutely LOVES these sticks! I had to find a new product after the USA-made chicken wrapped rawhide sticks were no longer available. It is very difficult to find a quality product made in the USA & while these are made in Cambodia, they seem to be made under very strict standards. I was also impressed that this co. claims it has never had a recall of their products. I also relied on the many, many excellent reviews of past customers. Our Teddy gets a stick every morning & then will wait by the pantry to get an additional 1 or 2 or more throughout the day! He usually does not eat the rawhide, just chews it up a bit. He is in love with these!! He also has a sensitive stomach & these have never bothered him one bit. His teeth are also quite clean from using these!
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Reviewed in the United States on April 18, 2026
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Verified Purchase
John Thacker
Waukegan, US
★★★★★ 5
Great dog treats
My two dogs love these treats.
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Reviewed in the United States on May 15, 2026
J
Verified Purchase
judydia
Birmingham, US
★★★★★ 5
Great value
You get so many in the package. My dog gets one each night after dinner as a “tooth brushing”. He’s a big greyhound and these are thin and smallish, which is great for smaller dogs, but he loves them anyway.
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Reviewed in the United States on May 21, 2026

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