Hardware parameters Product Model:FM225 Communication Interface: UARTandUSB Face algorithm: support deep learning infrared face recognition algorithm Recognition Accuracy:98.85 percent Number of :100 face features False recognition rate:Less than 0.0001 percent (one in a million) FAR. or FRR.:Less than 1 percent Recognition distance:0.3-1.1m Recognition height:1.35-2.20m or 20°-23° or tilt angle Left and right up and down -20 Recognition angle:Support multi-angle face entry, expand the recognition range Other parameters Power Requirement:DC5.5V-9V 1A Operating Temperature:-20℃-and60 Storage Temperature:-30℃-and70 Ambient Humidity:10 percent -93 percent without condensation Main board size: 40x15x10.65mm (not the whole size) Applicable scene:Smart home, security monitoring, intelligent door locks mobile vending machines and other fields Specifications: A Material: PCandMetal colour: black Package Contents: 1 x 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.