The SDA04P-V3 and SDA04PIV-V3 are standalone fingerprint recognition systems designed to operate without an external PC. They capture, store, and match fingerprint data for user identification and verification, and are intended for integration into access control units, door locks, and similar hardware products. Both models are built around a 1 GHz MIPS processor and support a template capacity of 20,000 fingerprints. They communicate via Serial (RS232, CMOS) and expose GPIO and Wiegand external interfaces. Fingerprint templates are stored and matched in SecuGen Proprietary, ANSI INCITS 378-2004, and ISO/IEC 19794-2 formats. The sensors operate at 500 PPI (SDA04P-V3) or 508 PPI (SDA04PIV-V3) with 256-level (8-bit) grayscale imaging and LED illumination. Both models support 1:1 verification and 1:N identification using NIST MINEX-compliant matching algorithms. Auto-On™ and Smart Capture™ features are included on both variants. The SDA04PIV-V3 is FBI Certified (PIV, FIPS 201, Mobile ID FAP 10 Compliant) and meets FBI Next Generation Identification (NGI) Image Quality Specifications (IQS). Optional water-resistant (-WR) variants are available for integration into IP65-rated products. A Developer Kit is available that includes hardware, software, APIs, data conversion modules, and documentation to support integration of the SDA into standalone or networked devices. The kit supports user profile management, system configuration, database management, and interfacing with SecuGen USB fingerprint readers.