Hardware parameters Product Model:FM225 Communication Interface: UART&USB Face algorithm: support deep learning infrared face recognition algorithm Recognition Accuracy:98.85% Number of faces:100 face features False recognition rate:Less than 0.0001%(one in a million) FAR./FRR.:Less than 1% Recognition distance:0.3~1.1m Recognition height:1.35~2.20m/@20~23/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~+60 Storage Temperature:-30~+70 Ambient Humidity:10%~93% 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: PC+Metal 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.