Dahua NVR4204-P-4KS2 User Manual page 23

Model
Audio Audio Input
Audio Output
Audio
Compression
Standard
Alarm Alarm Input
Alarm Output
Funciton Storage
Multiple-Chann
el Playback
Port and RS232 Port
Indicator
RS485 Port
USB Port
Network
Connection
PoE
Power Port
Power Button
21-S2 Series
1-ch bidirectional talk input
1-ch bidirectional talk output
G.711a
N/A
N/A
1 built-in SATA port
Max 16-channel D1 or 8-channel 720P or 4-channel 1080P playback
N/A
N/A
2 peripheral USB2.0 ports.
1 RJ45 10/100Mbps self-adaptive Ethernet port.
N/A
1 power socket.
Power adapter
power supplying
mode. DC 12V
power.
N/A
21-P-S2 Series
4
1 power socket.
Power adapter
power supplying
mode. DC 48V
power.
21-8P-S2 Series
8
1 power socket.
Power adapter
power supplying
mode. DC 48V
power.
8