Note: DC + 3.3V is used in R558S power supply design. Power input is not allowed until the R558S is connected. If the cable is plugged or unplugged with hot plug, the electronic components of the R558S will be damaged. Make sure that the power is cut off during cable plugging. Poor power connection, too short interval between power off and on operations, or excessive voltage drop pulses may cause the R558S to operate unstably. Ensure stable power input. After turning off the power input, wait at least 2 seconds before turning it on again. Parameter: Image pixels: 112*88 Resolution (dpi): 508 Sensor wear resistance: Greater than 200,000 times Storage capacity: 100 fingerprints Matching method: 1:1, 1:N Self-learning capability: Yes Indicator lights: Colorful lights Fingerprint image capture time: Less than 180ms Algorithm search time: Less than 100ms (with 50 templates) Overall recognition time: Less than 0.6s (with 50 templates) Startup time: Less than 50ms False acceptance rate (FAR): Less than 0.001% False rejection rate (FRR): Less than 1% Communication interface: UART (3.3V) UART communication baud rate: 57600 (default) Supply voltage: 3.3±0.3V Maximum current: Less than 40mA/VDD Shutdown current: Less than 12μA/VDD Operating temperature: -30°C to 70°C Storage temperature: -40°C to 85°C Relative humidity: 20% to 85% (non-condensing) ESD protection: Contact discharge ±8kV, Air discharge ±15kV Operating vibration: 10-150Hz, 0.5G, 3-axis, 1min/octave, 1 cycle per axis Drop resistance: Withstands a 1.2-meter drop onto concrete IP rating: Front IP54 waterproof Color: Photo Color Material: Plastic Package Contents: 1 x Fingerprint Module 1 x Cable