MQ2 Gas Sensor Tutorial For Arduino, ESP8266 And ESP32, 51% OFF

Package Includes: 1 X Optical Fingerprint Reader Sensor 2 X Cable Private clubs, management software, licensing and other management areas; Specifications: Supply voltage: DC 3.8 ~ 7.0V Backlight color: red Light way: long light / flashing Supply current: Operating current: <60mA Peak current: <85mA Fingerprint image input time: <0.5 seconds Window area: 15 × 17mm Matching method: Comparison method (1: 1) Search method (1: N) Characteristic file: 384 bytes Template file: 786 bytes Storage capacity: 240 Security Level: 3 (from low to high: 1,2,3,4,5) False Acceptance Rate (FAR): <0.001% (Security Level 3) It can work with any microcontroller which with serial port: such as Ar duino,51,avr,stm32,pic,arm,msp430. Pls note: the connection for the fingerprint sensor with 2560 and R3 is different, pls follow the connection diagram shows in the product images. Functions: fingerprint collection, fingerprint registration, fingerprint comparison and fingerprint search;Applications: Fingerprint door locks, Access control systems, management software, fingerprint payment etc. What you will get is: 1 X Fingerprint Reader Sensor Module with 1pc plug cable. If any question, pls contact us by email.