... /IERemote preview, recording, playback, PTZ/Speed dome controlAlertsEquipmentsupport alarm box, RS232/485Alarm eventmotion detection, video signal loss, sensor inputLinkagevideo recording, sound ... -12 ch signal input and outputOthersP/T/ZSupport multi-protocol, RS232/485, PTZ/Speed dome control softwareBack upUSBNetworkCD-RWDVD-RW backing upSecurityMulti ...