Table of Contents
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Model
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
Power
Button
IR
Receiver
Window
21-S2 Series
G.711a
N/A
N/A
1 built-in SATA port
Max 8-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
Power
power
supplying
mode.
DC
power.
N/A
On-off
N/A
N/A
21-P-S2 Series
4
socket.
1
power
adapter
Power
power
12V
mode.
DC
power.
21-8P-S2 Series
8
socket.
1
power
adapter
Power
supplying
power
48V
mode.
power.
socket.
adapter
supplying
DC
48V
8
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