... capacity *RS485/232,TCP/IP,USB communication Biometric Fingerprint Access Control System HF-F8 Introduction:One touch, that’s all it takes ... /485, TCP/IP, USB-hostAccess Control Interface for3rd party electric lock, door sensor, exit button, alarm, Door BellStandard FunctionsSMS,DLST, Webserver ... Temperature0 °C- 45 °COperating Humidity20%-80% Biometric Fingerprint Access Control System HF-F8