Best in 7 days
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Description
Optical Fingerprint Reader Sensor Module Door Lock Access Control Red Light for Arduino Mega2560 UNO R3 GeekstoryOptical Fingerprint Reader Sensor Module Door Lock Access Control Red Light for Arduino Mega2560 UNO R3 Geekstory Specifications: Model type: O40 Supply voltage: DC 3. 8 ~ 7. 0V Backlight color: red Light way: long light flashing Supply current: Operating current: <60mA Peak current: <85mA Fingerprint image input time: <0. 5 seconds Window area: 15 17mm Matching method: Comparison method (1: 1); Search method (1: N) Characteristic file: 384 bytes
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.6 ★★★★★
Based on 841 reviews
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Product Reviews
★★★★★ 1
Arrived covered in water, brush errors when trying to run
Unit came completely covered in water. Minimal care taken with this "like-new" unit, had been leaking water into the plastic bag. Even with that, I gave it the benefit of the doubt and still finished setting it up. Within the first 30 seconds it was already reporting an error with one of the brushes. They would barely spin, stop, and fail. Even after thorough cleaning, the error persisted. The unit also struggled to find the home dock even when placed next to it, eventually erroring out as well.
Given how many issues this had within 5 minutes of opening the like-new box, I returned this for a refund.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Great model, it’s basically new !!
It was basically new. Everything was still sealed and in its original box and packaging. After using it for a few days it I can honestly say it’s been great at keeping the floors clean, I love it!!
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Good quality and good value
Size: 2+6+1+12 Pack
this is a great deal and so nice to have on hand. I like being able to just grab replacement parts as needed and not have to place orders for them. It gives peace of mind to know I already have them on hand. much more affordable to buy all at once too
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Reviewed in the United States on June 29, 2025
★★★★★ 5
Works well
Size: 1+6+6 Pack
Fit perfect
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Reviewed in the United States on March 11, 2026
★★★★★ 5
Fits and works fine
Size: 1+6+6 Pack
Its a good deal for all the things it comes with.
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Reviewed in the United States on November 17, 2025
