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Downloads:
Arduino interface library on github
Datasheet (its not really a great datasheet and its Chinese but its better than nothing)
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Feature:
Supply voltage: 3.6 - 6.0VDC
Operating current: 120mA max
Peak current: 150mA max
Fingerprint imaging time: <1.0 seconds
Window area: 14mm x 18mm
Signature file: 256 bytes
Template file: 512 bytes
Storage capacity: 162 templates
Safety ratings (1-5 low to high safety)
False Acceptance Rate: <0.001% (Security level 3)
False Reject Rate: <1.0% (Security level 3)
Interface: TTL Serial
Baud rate: 9600, 19200, 28800, 38400, 57600 (default is 57600)
Working temperature rating: -20C to +50C
Working humidity: 40%-85% RH
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Full Dimensions: 56 x 20 x 21.5mm
Exposed Dimensions (when placed in box): 21mm x 21mm x 21mm triangular
Weight: 20 grams