R503 Fingerprint Module — precision, compact biometric sensor Why you need it Accurate and reliable fingerprint identification for secured access and user management. Fast response and low power consumption for embedded systems where speed and efficiency matter. Compact, easytoinstall design that integrates image capture and processing in one unit. Key benefits precision recognition: builtin algorithm chip with a circular 192x192 pixel sensor at 508 dpi captures fine ridge details from dry, wet, or lightly textured fingers. Fast matching: fingerprint verification in under 0.3 seconds. 1 to N searches can process up to 1000 comparisons in the same timeframe for efficient user handling. Secure performance: false accept rate (FAR) below 0.0001 percent and false reject rate (FRR) under 1.0 percent for dependable identification. Low power and compact footprint: operates at 3.3 V with a typical current of 30 mA, suitable for batterypowered or constrained applications. Simple integration: TTL logic level RS232 interface and a 19 mm installation diameter fit a variety of product layouts. Userfriendly operation: twocolor ring indicator for clear status feedback and straightforward installation without complicated tools. Robust operating range: works across 20 to +45 C and 10 to 85 percent relative humidity for use in a wide range of environments. Technical highlights Model: R503 fingerprint module Sensor: circular 192 x 192 pixel Resolution: 508 dpi Storage: up to 200 fingerprint templates Matching speed: under 0.3 seconds; 1 to N up to 1000 matches within the same interval Interface: TTL logic level RS232 Power: 3.3 V, typical current 30 mA Status indicator: twocolor ring light Installation diameter: 19 mm Operating conditions: 20 to +45 C, 10 to 85 percent humidity Identification modes: 1 to 1 comparison and 1 to N search Practical applications Access control systems: embed the module in door readers and turnstiles for fast, secure entry management. Safety boxes and safes: provide reliable fingerprint access for valuables and documents. Assistance devices: integrate into kiosks, terminals, and other userfacing devices that require quick biometric identification. What makes it stand out Integrated image capture and algorithm processing in one compact unit reduces design complexity. resolution sensor and optimized algorithm deliver accurate recognition across challenging finger conditions. Low power draw and standard TTL RS232 interface simplify integration into a wide range of security and consumer devices. Compatibility note Designed for embedding in access control systems, safety boxes, and assistance devices using a TTL logic level RS232 interface and a 19 mm mounting hole.