SKU: 4437899561

JW3109B Portable Optical Light Source Wavelengths 850/1300nm

$121.63 $135.14
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Description

JW3109B Portable Optical Light Source Wavelengths 850/1300nmPart Number: OEM NO. JW3109B Application: Provides 1~4 output wavelengths which can be optional according to customer's needs. CW, 2Hz modulation output at 650nm, and CW, 270Hz,1KHz,2KHz modulation output at other wavelengths. High stability of the output power. Stable output wavelength. Backlight LCD display supports night operation. Compact size and decent appearance. Large LCD, easy operation. Alternative 10 minutes Auto off function conserving

Part Number:

OEM NO. JW3109B

Application:

Provides 1~4 output wavelengths which can be optional according to customer's needs.
CW, 2Hz modulation output at 650nm, and CW, 270Hz,1KHz,2KHz modulation output at other wavelengths.
High stability of the output power.
Stable output wavelength.
Backlight LCD display supports night operation.
Compact size and decent appearance.
Large LCD, easy operation.
Alternative 10 minutes Auto-off function conserving battery life.

Specification:


Type:JW3109A JW3109B JW3109C JW3109D
Wavelengths(nm):650 850/1300 1310/1550 850/1300/1310/1550
Emitter Type:FP-LD,LED or others please specify¡¡
Typical Output Power (dBm):0-7dBm for LD, -20dBm for LED
Spectral Width(nm):¡Ü10
Output Stability:¡À0.05dB/15mins; ¡À0.1dB/ 8hours
Modulation Frequencies:CW,2Hz CW,270Hz,1KHz,2KHz
Optical Connector:FC/ universal adaptor FC/PC
Power Supply:Alkaline Battery(3 AA 1.5V batteries)
Battery Operating Time(hour):45
Operating Temperature(¡æ):-10~+60
Storage Temperature(¡æ):-25~+70
Dimension(mm):175x82x33
Joinwit Recommendation:
JW3109 Handheld Light Source is designed for optimal use with JW3208 Optical Power Meter for measuring
optical loss on both single mode and multimode fiber cable

Notice:

JW3109 optical light source can provide 1 to 4 output wavelengths to meet specific requirements, including the 650nm red source and the 1310/1550nm wavelengths for single mode fiber or the 850/1300nm wavelengths for multimode fiber, as well as other wavelengths according to customer needs. Together with the JW3208 optical power meter, it is a perfect solution for the fiber optic network characterization.

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: 4437899561

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4.2 ★★★★★
Based on 9 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Draper, US
★★★★★ 3
Feels cheap, not good for old eyes.
The watch seemed to work good. But it felt cheap, and I was looking for something with better illumination and easier to read. I ended up returning it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 3, 2025
J
Verified Purchase
Jimmy
Chelsea, US
★★★★★ 5
Takes a Licking and Keeps on Ticking
Color: Green/Black
I love this watch despite the fact that it is really a toy. I love the look of the watch, I love how lite the weight of the watch is on my wrist, and it really does keep good time if you manage the solar charge properly. Other than looking cool on your wrist, this watch has absolutely no functions other than time keeping. The black plastic bezel is molded into the case and does not turn, so don't plan on using that. The watch has no light, the dial numbers are non-luminous and the hands are very limited in terms of luminosity. No buttons. All you can do is adjust the time and date by pulling out what used to be a winding stem in the good old days. The small tag on the strap with Geographic coordinates shown on it indicate the location of the old Timex manufacturing facility (SW of Waterbury, CT). I have a nice ledge at my bedroom window and it gets good western sun for a good part of the day regardless of the time of year. On this ledge you will find a half dozen solar powered watches (mostly Casio) properly aligned to maximize the charge they may receive each day. Note that the description for this Timex watch specifically states that a lightbulb won't charge this watch. You need direct sunlight for several hours if you want to get more than a 3-week charge into this watch. So, I'll leave you with a couple of tips, my friends; 1.) If you are looking for a first watch to give your outdoorsy oriented Son or Daughter, then give them this one. Why? Because it is cool looking, fairly well built, and it actually works, 2.) After you receive your Timex watch, be sure to keep the display mount it is packaged with. It makes a great fixture to mount your watch on for charging and allows you to maximize the position of the solar cells on the dial so that you can optimize charging time. Have Fun! Jimmy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 28, 2026
N
Verified Purchase
Nuka Shroom Soup
New York, US
★★★★★ 5
Excellent value, flawless performance for well over a year and no signs of quitting.
Color: Green/Black
Excellent value, had this for well over a year and it still keeps perfect time, still water resistant. No worries about having to change batteries. Owned a fancy expensive (battery) watch once and the dept. store repair intentionally sabotaged the watch in the hopes I would purchase another from them. Yeah, good luck with that, lost my business forever. This is the 21st century, cell phones are the new time pieces, but solar is totally reliable and Timex makes it happen. Holds a charge for many months, although I prop it in a bright window for a few days every few months or so just to make sure the cells are always fully charged, although it's probably unnecessary, just being over cautious. I haven't actually experienced this watch ever running out of power even after months of use. Damn impressive, as it should be.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 12, 2025
B
Verified Purchase
Bill
Los Angeles, US
★★★★★ 4
Good value for solar watch
Color: Black/Orange
Nice watch! It is plastic like but it is solar. No indiglo button only a little luminous on the hands so you don't want to wear it in tje dark and expect to check the time. 45mm case is good size for my wrist and the band works good also, Not too long not too short. Overall a good watch with no problems
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
B
Verified Purchase
Barry Vercueil
Bozeman, US
★★★★★ 5
Amazing Solar for the price
Color: Black/Orange, Color: Black/Orange
Great watch. Very good visibility. Ligh and feels quality. Easy to swap straps. Same size as my Casio Duro. Highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026

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