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Model
Port and
RS232 Port
Indicator
RS485 Port
USB Port
Network
Connection
PoE
Power Port
Power Button
Power
Button
IR
Receiver
Window
Clock
Indicator Light
Power
General
Consumption
Working
Temperature
Working
Humidity
Air pressure
Dimension
21-S2 Series
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
Built-in clock.
One power status indicator light.
One network status indicator light.
One HDD status indicator light.
＜10W (No HDD)
﹣10℃～﹢55℃
10℅～90℅
86kPa～106kPa
205mm×206.75mm×
21-P-S2 Series
4
socket.
1
power
adapter
Power
power
12V
mode.
DC
power.
205mm×206.75mm×
21-8P-S2 Series
8
socket.
1
power
adapter
Power
supplying
power
48V
mode.
power.
425mm×95mm×260
socket.
adapter
supplying
DC
48V
4
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