# Feature Function
10 SERIAL Ports (1-8) Terminal Block Connect to up to 8 serial controlled devices, for Ethernet-to-RS232
IR Ports (1-8) Terminal Block
Connect to up to 8 IR emitters or blasters.
12 I/O Ports (1-8) Terminal Block Connect to up to 8 sensors or devices to be controlled, (for example, a
motion sensor). Port may be configured as a digital input, digital output, or
13 RELAY Ports (1-8) Terminal Block 6 NO relays and 2 NC relays.
Connect to up to 8 devices to be controlled by relay (for example, a
motorized projection screen).
15 ID Button For self-identification over the network.
Press the button to send (broadcast) the Beacon P3K command.
Reply includes: IP address, UDP port number, TCP port number, MAC
16 RESET Button For performing a factory default reset.
17 LAN RJ-45 Connector Connects to a local area network. Indications:
LINK LED lights amber – 1000/100/10MB connection.
DATA LED flashes green – Ethernet data link activity.
Power Socket with Fuse and Power Switch
Connects to mains electricity, powers on and off the device.
Step 3: Install the SL-280
To rack mount the machine attach both ear brackets to the machine (by removing the three
screws from each side of the machine and replacing those screws through the ear brackets)
or place the machine on a table.
Step 4: Connect the inputs and outputs
Always switch OFF the power on each device before connecting it to your SL-280. For best results, we recommend that you always
use Kramer high-performance cables to connect AV equipment to the SL-280.
Step 5: Connect the power
Connect AC power to the rear of the SL-280, switch on its power and then switch on the power on each device.
Safety Instructions
There are no operator serviceable parts inside the unit.
Use only the power cord that is supplied with the unit.
Do not open the unit. High voltages can cause electrical shock! Servicing by qualified personnel only.
Disconnect the power and unplug the unit from the wall before installing.
for updated safety information.