R503 Circular Capacitive Fingerprint Module with RGB Ring Indicator A compact, panelready capacitive fingerprint sensor module that combines a 15mm sensing area with a controllable RGB ring indicator. Designed for straightforward integration into embedded systems that use DC3.3V logic and an MX1.06Pin connector. Key benefits Faster, more convenient user authentication compared to passwords or keypads. The capacitive sensor reads fingerprint details reliably for routine access and identification tasks. Visual status feedback via the integrated RGB ring LED. Use color and blink patterns to indicate ready, success, error, or standby states without extra hardware. Simple hardware connection and low voltage operation. Works at DC3.3V and uses a compact MX1.06Pin interface for power and signal wiring, making installation clean and repeatable. Spaceefficient round form factor. The 15mm sensing area and circular design fit common panel cutouts and compact enclosures. Primary features and specifications Model: R503 circular capacitive fingerprint module Sensing area diameter: 15mm Indicator: RGB ring LED with external control for status signaling Power: DC3.3V operation Connector: MX1.0 pitch 6pin interface for power and signal connections Sensing type: capacitive fingerprint detection for fingerprint pattern capture Integration and performance notes Designed for direct integration into microcontroller and single board computer projects that support 3.3V logic via the MX1.06Pin connector. The RGB ring provides immediate visual feedback without additional LEDs or indicators, reducing wiring and component count. Compact circular shape supports panel mounting and embedded installations where a small, clean sensor opening is required. Typical applications Secure door access and electronic locks where compact biometric authentication is needed. Time and attendance readers or employee terminals in small offices and kiosks. DIY and prototype projects that require biometric input and visual status indication in a compact module. What you get A 15mm capacitive fingerprint sensor module with builtin RGB ring LED and MX1.06Pin connector, ready for integration into systems operating at DC3.3V. Use this module when you need a compact, easy to wire fingerprint input with immediate visual status feedback for embedded and panelmounted applications.