Type:Optical Sensor Life:100 million times Static indicators:15KV Fingerprint reader can conduct secondary development,can be embedded into a variety of end products.Users can conduct secondary development,can be embedded into a variety of end products,such as:access control,attendance,safety deposit box,car door locks Low power consumption,low cost,small size,excellent performance.Professional optical technology,precise module manufacturing .Good image processing capabilities,can successfully capture image up to resolution 500 dpi.Finger detection function. Colour:Black Material:ABS Size:14 x 18 mm Interface:USB2.0/UART(TTL logical level) RS232 communication baud rate:9600BPS~115200BPS changeable Operating Envirement Temperature:-20 to 50 degrees. Verification Speed:0.2 sec Scanning Speed:0.3 sec Character file size:256 bytes Template size:512 bytes Storage capacity:1000 Working current:Typical less than equal 75mA Package Contents: 4 x Fingerprint Reader Module 4 cable 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.