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{"title":"Grow R503PRO Uart\/USB 1500 Capacity DC3.3V Fingerprint Module Sensor Scanner","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/65\/f4\/3414442f0560b7638b944a23ba5f-200x200-1\/grow_r503pro_uart_2fusb_1500_capacity_dc3_3v_fingerprint_module_sensor_scanner.jpg","attrs":{"Place of Origin":"China","Certification":"CE","Minimum Order Quantity":"1","Packaging Details":"Carton"}}
{"title":"Grow R503-M22 DC3.3V 200 Capacity Capacitive Fingerprint Module Sensor Scanner","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/e2\/ad\/9108fe7d47a83c88631c4fed1517-200x200-1\/grow_r503_m22_dc3_3v_200_capacity_capacitive_fingerprint_module_sensor_scanner.jpg","attrs":{"Place of Origin":"China","Certification":"CE","Minimum Order Quantity":"1","Packaging Details":"Carton"}}
{"title":"R306S FPC1011F3 Capacitive Fingerprint Module with Free Sdk","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/ab\/f9\/f88e4b63a138b2a823442851ea0d-200x200-1\/r306s_fpc1011f3_capacitive_fingerprint_module_with_free_sdk.jpg","attrs":{"Place of Origin":"China","Certification":"CE","Minimum Order Quantity":"1","Packaging Details":"Carton"}}
{"title":"Grow R303S FPC1020 Capacitive Fingerprint Module with Free Sdk","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/5e\/7d\/c567e85e667671ff150fcb032d5e-200x200-1\/grow_r303s_fpc1020_capacitive_fingerprint_module_with_free_sdk.jpg","attrs":{"Place of Origin":"China","Certification":"CE","Minimum Order Quantity":"1","Packaging Details":"Carton"}}
{"title":"Grow R503S 160*160 Pixel LED Control Capacitive Fingerprint Module Sensor","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/23\/d8\/e92b639e672129337332ffc8aacc-200x200-1\/grow_r503s_160_2a160_pixel_led_control_capacitive_fingerprint_module_sensor_scanner.jpg","attrs":{"Place of Origin":"China","Certification":"CE","Minimum Order Quantity":"1","Packaging Details":"Carton"}}
{"title":"Grow R502-F IP65 Waterproof Small DC3.3V RGB LED Capacitive Fingerprint Module","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/87\/d9\/db67a13401b1d15d6bb942f672fb-200x200-1\/grow_r502_f_ip65_waterproof_small_dc3_3v_rgb_led_capacitive_fingerprint_module.jpg","attrs":{"Place of Origin":"China","Certification":"CE","Minimum Order Quantity":"1","Packaging Details":"Carton"}}
·Communication interface : USB and UART ·1:N Identification (One-to-Many) ·1:1 Verification (One-to-One) ·High speed fingerprint identification algorithm engine ·Self study function ·Fingerprint feature data read/write functions ·Get Feature Data of Captured fingerprint and Verify/Identify Downloaded Feature with Captured ·Fingerprint Identify Downloaded Feature with Captured fingerprint ·Security Level setting ·Able to set BaudRate/ Device ID/Device Password ·Operating system:Windows 98, Me, NT4.0, 2000, XP,WIN 7 or Android
Specifications
·Interface:USB 2.0 and UART(3.3V-TTL logic) ·Resolution:508 DPI ·Work Current: <55mA ·Voltage: DC 4.2-6.0V ·Fingerprint capacity:1000 ·Security Level: 1-5, default is 3 ·Sensor Array: 208*288 pixel ·Fingerprint reader module size: 20.4 * 33.4 (mm) ·Effective collection area: 11 * 15 (mm) ·ScanningSpeed: < 0.2 second ·Verification Speed: < 0.3 second ·Matching Method: 1:1; 1:N ·FRR (False Rejection Ratio): ≤0.01% ·FAR (False Acceptance Ratio): ≤0.00001% ·Work environment: -20°C ---55°C ·Work Humidity: 20-80% ·Communications baud rate (UART): (9600 × N) bps where N = 1 ~ 12(default N = 6, ie 57600bps)
Files
·All fingerprint module support with Arduino, Android, Windows, Linux, .Net and so on. ·Provide Free SDK Files ·Provide User Manual
Why do fingerprint modules fail in cold weather?
In cold weather conditions, the recognition performance of fingerprint modules is often affected, resulting in recognition failure or slower recognition speed. Behind this phenomenon, there are multiple complex reasons hidden.
Firstly, cold weather causes the skin on the fingers to become dry. As the temperature decreases, the humidity in the air also decreases, which accelerates the evaporation of moisture on the surface of the finger skin, making it dry and rough. Dry skin not only makes it difficult to form clear fingerprint images, but also affects the sensor of the fingerprint scanner in capturing fingerprint information. Especially for capacitive fingerprint modules, their working principle relies on the tiny capacitance changes on the surface of the finger skin, and dry skin can significantly affect these capacitance changes, leading to recognition failure.
Secondly, cold weather can also affect the blood circulation of fingers. In order to maintain body temperature, the body's protective mechanism reduces blood circulation in the limbs to minimize heat loss. This change will cause a decrease in the temperature of the finger skin, slow down blood circulation, and thus affect the conductivity of the skin. Capacitive fingerprint scanners rely on changes in the conductivity of the skin surface to capture fingerprint information when recognizing fingerprints. Therefore, the decrease in conductivity will directly affect the recognition performance of fingerprint modules.
In addition, cold weather may also cause cracking or peeling of finger skin. Under the dual effects of dryness and cold, the skin of fingers is prone to cracking or peeling. These minor damages on the surface of the skin can interfere with the recognition process of the fingerprint scanner, making the fingerprint information blurry or difficult to recognize.
In summary, the negative impact of cold weather on the recognition performance of fingerprint modules is mainly due to dry finger skin, slow blood circulation, and skin cracking or peeling. These factors work together to make it more difficult to use fingerprint modules for identity verification in cold weather.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2013
Total Annual:
3000000-5000000
Employee Number:
101~200
Ecer Certification：
Verified Supplier
Hangzhou Grow technology Co., Ltd. is a company working in the field of intelligent image recognition products with more than 10 years, we have real experts on manufacturing of barcode scanner, fingerprint module and intelligent lock in China. "GROW" is striving to increase customer satisf... Hangzhou Grow technology Co., Ltd. is a company working in the field of intelligent image recognition products with more than 10 years, we have real experts on manufacturing of barcode scanner, fingerprint module and intelligent lock in China. "GROW" is striving to increase customer satisf...
