... communicationBuilt-in contacts for 3rd party electric lock, door sensor, alarm, exit button, or bell.Wiegand ... 7.0 & ZK Finger 10.02000mAh backup batteryOptionalCommunicationTCP/IP,RS232/485USB-HOSTTwo USB-HostWireless Wi-FiOptionalTime attendance ... , DLSTAccess control interfaces for 3rd party electric lock, door sensor, exit buttonWiegand SignalOutputOptional functionsserial printer, Mifare card, ...