... /WPA/WPA2 encryptionaa Standard H.264 video compression G.711 audio compression Support D1, Half D1, AST-9301DMain Features WIFI ... web server, support web browser configure update Support two-way audio Support snapshot, record, replay Support RS232 and RS485 (PTZ) interface ... ×288Video Input 1 ch (CVBS) BNC (1.0Vp-p, 75Ω)Video Loop outBNC(1.0Vp-p,75Ω)Audio Input 1 channel BNC interface, 1 channel MIC ...