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Description
SFP-25G-ER40-S Cisco® Compatible Transceiver SFP28 25GBase-ER (1310nm, SMF, 40km, LC, DOM, Ind Temp)SFP 25G ER40 S Cisco Compatible Transceiver SFP28 25GBase ER (1310nm, SMF, 40km, LC, DOM, Ind Temp) ATGBICS Cisco Compatible SFP 25G ER40 S SFP28 25GBase ER form factor network transceiver supports a distance of up to 40km over single mode fibre (SMF) using a wavelength of 1310nm via an LC Duplex connector. This product operates within an industrial temperature range. Digital optical monitoring (DOM) support is also present enabling real time
SFP-25G-ER40-S Cisco® Compatible Transceiver SFP28 25GBase-ER (1310nm, SMF, 40km, LC, DOM, Ind Temp)
ATGBICS Cisco® Compatible SFP-25G-ER40-S SFP28 25GBase-ER form factor network transceiver supports a distance of up to 40km over single-mode fibre (SMF) using a wavelength of 1310nm via an LC Duplex connector. This product operates within an industrial temperature range. Digital optical monitoring (DOM) support is also present enabling real-time monitoring of the parameters of the fibre optic transceiver.
Our product meets the specification of Cisco® SFP-25G-ER40-S and we proudly offer a compatibility guarantee and limited lifetime warranty. Our rigorously tested products record a unique traceable serial number and are fully compliant with all MSA (Multi-Source Agreement) and IEEE standards & protocols.
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4.2 ★★★★★
Based on 689 reviews
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Product Reviews
★★★★★ 5
Great price...
Format: Paperback
Needed this for my EKG course. Price was right.
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Reviewed in the United States on February 1, 2026
★★★★★ 5
Satisfied
Format: Paperback, Format: Paperback
Brand new got here on time, haven’t got to indulge in the content yet but definitely exactly what I ordered.
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Reviewed in the United States on May 10, 2025
★★★★★ 5
EKGs are difficult and I still don’t understand
Format: Paperback
Hey I’m in nursing school and I bought this… it’s not the pocket size, it’s actually a full size book. It brought tears to my eyes many times. I have no idea what a 3rd degree block is. Hopefully you can learn and be a good nurse! EKGs are for the doctors to read. So don’t be too hard on yourself. But you should probably know what normal sinus rhythm looks like… 👍🏼
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Reviewed in the United States on January 22, 2024
★★★★★ 5
My teacher thinks some of the ekgs are wrong
Format: Paperback
Can anyone put me in contact with the author of this book? My ekg/cardiology teacher is slandering her name and saying some of the rhythms she has in this book are wrong. Really upsets me because he is only a nurse and teaching a pre paramedic course. Doctors and cardiologist were the ones who cited this book. The rhythms are correct, my teacher just wants to think he is smarter than everyone else when it comes to cardiology. Otherwise I love this book and very helpful.
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Reviewed in the United States on November 8, 2023
★★★★★ 5
Excellent Book
Format: Paperback
As a nurse I struggle sometimes with rhythm recognition for some of the more complicated ones. This book is easy to read with many practice strips to help you comprehend even the complex details. Would highly recommend to anyone who needs to learn EKGs or brush up on their rhythm recognition skills. Great book!
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Reviewed in the United States on June 8, 2023