SKU: 97796671755

Optical Variable Attenuator EVA50-60

Sale price$248.45 Regular price$276.06
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Description

Optical Variable Attenuator EVA50-60Most 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: 97796671755

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Timur
Belleville, US
★★★★★ 5
Impressive, especially at this price point.
Color: black/black
Feels & looks like a Timex Expedition- which fills with water in the shower, fogs on himid days. This is a fraction of the cost and functions as advertised.
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Reviewed in the United States on May 18, 2026
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Parker
Charlottesville, US
★★★★★ 4
Such an amazing watch
Color: silver/black
Beautiful look, no noise. The brightness on the glow and the dark portions are amazing during the night. It feels like a hundred dollar watch while being so cheap and affordable. Lightweight and easy to wear. I’ve done a lot of hard work with this watch and there isn’t a scratch on it.
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Reviewed in the United States on April 6, 2025
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Amazon Customer
Grantham, US
★★★★★ 5
Price is good
Color: black/black
Seems ok so far.
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Reviewed in the United States on June 2, 2026
K
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Kyle
Bozeman, US
★★★★★ 5
Fashionable and Affordable
Color: black/black/green, Color: black/black/green
Watch face is very readable and strap is comfortable. Glass has yet to be scratched and I work a blue collar job. Fantastic watch for the price, keeps accurate time too.
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Reviewed in the United States on April 23, 2026
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Verified Purchase
Ringmaster
Massapequa, US
★★★★★ 5
A great versatile watch
Color: black/black
This is a great watch. I wear a Rolex GMT daily, but wear this at the gym, at fencing practice, holding power equipment , hammering and other activities. Runs fine, keeps good time, easy to read. Like the 24 hour dial. Sometimes I just wear it because I like it.
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Reviewed in the United States on May 6, 2026

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