User's Manual

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