... It support Wiegand 26bit and RS485 output, 2. support USB online upgrade. USB Fingerprint Reader,biometric Reader 1,Introduction 1.CHD200F series ... authorization confirmation.3. Support Wiegand 26bit and RS485 output, support USB online upgrade, have high compatibility with other fingerprint device, good ... one time, red & blue LED light flash one time. USB Fingerprint Reader,biometric Reader CHD200F