The F900 recognition module features low power consumption, fast recognition, a refined appearance, and a compact structure. It has self-learning capabilities, and recognition improves with usage. It has a high recognition pass rate and a false positive rate of less than one in a million. It works well in bright light, dim light, and backlight. This Module is equipped with encryption technology to prevent spoofing attacks such as photos, masks, and videos, ensuring data security and reliability. Communication Interface: UART Power Supply: 5-12V Optical: FOV D90, H62, V77 Camera: Dual IR depth camera module Storage Capacity: 50 people Self-learning: Yes Recognition Range: 0.4-1m (Optimal Recognition Range: approximately 0.6m) Cold Recognition Speed: Less than 1.4 seconds False Acceptance Rate (FAR): Less than 0.0001% Communication Baud Rate (UART): 115200bps (default) External Supply Voltage: 4.5-13.5V Operating Temperature: -20C to +70C Storage Temperature: -40C to +90C Operating Humidity: Less than 95% Storage Humidity: Less than 95% Power Consumption: Less than 2.3W : 18 mm ESD: Human Body Model complies with ANSI/ESDA/JEDEC -001 2000V Charging Device Model complies with JEDEC specification JESD22-C101 500V Color: Black Material: plastic Package Contents: 1 x Recognition Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.