The optical fingerprint sensor module connects to a microcontroller via serial communication and operates on a 3.3 V or 5 V supply. It supports 1:1 matching and 1:N searching, with storage for up to 1,000 fingerprints.

Image capture and search are completed in less than 1 second. Communication with a computer via RS-232 requires a level-shifting circuit, such as the MAX232.

• Type: Fingerprint sensor
• Supply voltage: 3.6–6.0 V or 3.3 V
• Supply current: Less than 120 mA
• Peak current: Less than 140 mA
• Image capture time: Less than 1 second
• Window size: 14 × 18 mm
• Matching modes: 1:1 and 1:N
• Signature file size: 256 bytes
• Template file size: 512 bytes
• Storage capacity: 1,000 fingerprints
• Security levels: 5
• False acceptance rate (FAR): Less than 0.001% at security level 3
• False rejection rate (FRR): Less than 1% at security level 3
• Search time: Less than 1 second for 1:500, on average
• Computer interfaces: UART (TTL) or USB 2.0/1.1
• UART baud rate: 9,600 × N bps, where N = 1–12; default N = 6 (57,600 bps)
• Operating temperature: -20 to +50 °C
• Operating humidity: 40–85% RH, non-condensing
• Storage temperature: -40 to +85 °C
• Storage humidity: Less than 85% RH, non-condensing
• Dimensions: 56 × 20 × 21.5 mm
• Package contents: 1 optical fingerprint sensor module