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- USA
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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22
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Description
TP-Link TL-SM311LM Gigabit Multi-Mode LC MiniGBIC SFP ModuleWhat This Product Does The TL SM311 series Fiber Module Cards are introduced for extending transfer distance. Attached to our managed smart switches, they can extend the distance to several kilometers even tens of kilometers which can basically satisfy the distance requirement of LAN. Users can choose whether and which items to use the fiber modules according to the demand in order to lower cost. Specifications PACKAGE CONTENTS Package Contents: SFP
What This Product DoesThe TL-SM311 series Fiber Module Cards are introduced for extending transfer distance. Attached to our managed/smart switches, they can extend the distance to several kilometers even tens of kilometers which can basically satisfy the distance requirement of LAN. Users can choose whether and which items to use the fiber modules according to the demand in order to lower cost.
Specifications
PACKAGE CONTENTS
Package Contents:
• SFP Module TL-SM311LM
• Installation Guide
MEDIA CONVERTER & MODULE
Standards and Protocols:
IEEE 802.3z, CSMA/CD, TCP/IP
Wave Length:
850nm
Dimensions (W*D*H):
2.2*0.5*0.5 in (55.4*13.7*12.9 mm)
Power Supply:
3.3V
Safety & Emission:
FCC, CE
Cable:
Multi-mode Fiber
Fiber Type:
50/125µm or 62.5/125µm Multi-mode
Max. Cable Length:
550m
Data Rate:
1.25Gbps
Port Type:
LC/UPC
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.8 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
this is the perfect daily everyday use digital watch........
Color: Black
hands down the best edc digital watch available, this watch is everything you need at a quarter of the cost of other digital watches. we all know the durability of iron man watches its legendary, but where this watch beats even other iron man offerings is the size of the digital numbers displayed a bit larger for aging eyes and what makes it even more durable than the other iron man watch's is that the instructional labeling of the buttons is under the glass and wont fade or rub off under use making it look cleaner and newer for longer. now lets mention the size or foot print of this watch, i own several watches from competing brands and almost once a day i hit the watch on something a door knob a table corner, but when I'm wearing this Timex 40mm i never hit it on anything due to the thinness of the watch.
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Reviewed in the United States on May 11, 2025
★★★★★ 5
The Best
Color: Black
Ironman watches are the best for everyday and the price is right!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 19, 2026
★★★★★ 5
Works as expected
Color: Black
It's a Timex. Says it all...!
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Reviewed in the United States on February 15, 2026
★★★★★ 5
Buy!
Color: Black/Negative
Great watch
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Reviewed in the United States on February 22, 2026
★★★★★ 4
No instructions
Color: Black/Negative
Watch is good, but it came with no instructions bc this is very confusing to figure out. Backlight is great effect and really nice for the value. Easy to see and read
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Reviewed in the United States on May 29, 2026