SinLoon Visual Fault Locator,Red Light Pen Fiber Optic Cable Tester Meter,Cable Test Equipment Suitable for 2.5 mm Connector, for CATV Telecommunications Engineering Maintenance（1mW）

Good power, I also use it to check for light loss. Seems to have about a -18db @ 1310 transmit level which is perfect for checking sonet spans.

Works great, easy to use.

My husband used this for his job. It's good always works.

Use it at work all the time. Works great.

la linterna tenia un pequeño problema como floja prende y a veces no pero cuando prende trabaja bien

I am a university professor who teaches and does research specifically in the field of lasers and optics. I wanted to buy a low power laser so that my K-12 outreach activities could be safe enough to be done by teachers rather than laser experts. This product claimed 1 mW output power and class 1 (technically class 1 is 0.4 mW or less at this wavelength). Anyway, I measured it to be 26 mW, which is way more powerful than is safe for any classroom demonstration. I don’t know why the box has options listed of 1, 5, 10, 15, 20, 30, 50, and 60 mW with 1 mW checked and the laser has a sticker saying 1 mW when the actual output power is orders of magnitude higher. I’m returning it and continuing my search. Advice to others: be careful to not let even stray reflections reach your eye. This laser outputs well above the 5 mW limit of a class 3B laser and can do serious damage to your eyes even for short exposure.

Works as described.

Worked well till it broke outta no where.

good enough build quality but seemingly massively overpowered. Not 1mW but ~15mW according to my measurements. Eye damage anyone?

Compared to my Corning laser, I had more success using this tool. It's reliable and at a good price.

Useful

Super bright light that's easy to find in a fiber terminal.

Il s'éteint, le bouton on off, ne tient en place