The quality seems pretty good. There is a quality control sticker on the relay. It may just be for the relay. They were packaged very well. I purchased 2 of them and they arrived in perfect condition. I connected them to bench power supply, 30vdc+/-. They sound great. Very clean sounding.
****a (1341)- Opinie wystawione przez kupującego.
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Nice little laser driver that is a great value for DIY projects with fun lasers! Arrived in great condition and fast shipping. will be in my next project.
o***s (97)- Opinie wystawione przez kupującego.
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This looks good. They have threaded mounting holes to attach to a mounting plate. I'll buy more.
s***o (264)- Opinie wystawione przez kupującego.
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The 30mw green lasers with TTL control look to be of good quality should do do the job. I've yet to connect them and confirm that they work as advertised. The price was a little higher than I was hoping to spend. My total cost for the quatity of 4 was $81.
2***a (1428)- Opinie wystawione przez kupującego.
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Laser Diode Assembly as described and shipped fast.