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Neets Control -
Sierra II, DK
P/N#: 310-0202
LAN
GND
+12V
RX-1
TX-1
GND
TX-2
TX-3
GND
I/O 3
I/O 2
I/O 1
GND
GND
NCL
NDA
PWR
RoHS
Neets Control -
Sierra II, DK
P/N#: 310-0202
LAN
GND
+12V
RX-1
TX-1
GND
TX-2
TX-3
GND
I/O 3
I/O 2
I/O 1
GND
GND
NCL
NDA
PWR
RoHS
PIN 2 <-> Tx
PIN 3 <-> Rx
PIN 5 <-> GND
Connections and Controls
Power input port
Connect the SieRRa II to the supplied AC
power adaptor using the supplied 2 pole screw
block terminal. White/black wire connects to 12V,
black wire connects to GND.
The SieRRa II adaptor incorporates a universal
mains input which accepts AC line input from 100 V
to 240 V.
Note: If using the PoE functionality to power the
SieRRa II, do not connect the AC power adaptor.
I/O ports
The three I/O (Inputs/Outputs) can be configured as
either output or input. Each is available for
connection to a PIR (movement) sensor, keyboard
lock, relays or for other compatible uses. The ports
are not potential free; you may need external relays
to prevent ground loops depending on your
application.
When used as outputs, the I/O ports are active
low. When activated, the I/O ports are tied to GND
through a FET transistor (also called open drain/
collector function). Each I/O can draw up to
24VDC/500mA.
When used as inputs, the applied voltage must be
below 1 VDC to be accepted as LOW, and above 4
VDC (but below 24 VDC) to be accepted as HIGH.
The inputs are default HIGH and must be connected
to ground in order to change state.
RS-232/IR ports
The RS-232 ports (TX-1, RX-1, TX-2, TX-3) are used
for one- or two-way communication. Port 1 is a two
way port, which can be used for devices for which a
reply function is required, such as a projector.
LAN
GND
+12V
RX-1
TX-1
GND
TX-2
I/O 3
I/O 2
I/O 1
GND
GND
NCL
RoHS
LAN
GND
+12V
RX-1
TX-1
GND
TX-2
I/O 3
I/O 2
I/O 1
GND
GND
NCL
RoHS
Relay control
Input trigger
Relay
Switch
