Type:Biometric Time Recording Fingerprint capacity:3000 Log capacity:100000 Communication:TCP IP USB Screen:3inch TFT color screen Sensor:Latest Silkprint Reader Optional:, External Bell,Webserver, ADMS Standard Functions:Work Code, SMS, DST, Scheduled-bell, Self-Service Query, Hardware Platfor:ZMM220 card capacity(optional):10000 Size:180 * 135 * 37 mm