Stinger JPEG 2000 - Manual (Page 10)

Installation
3. Alarm Connections
Connect the alarms to the SENSOR INPUT/OUTPUT on the unit.
Relay output: COM+NC, COM+NO OR COM+NC+NO
Alarm input: A short-circuit between Alarm 1, Alarm 2, Alarm 3 or Alarm 4 and GND will be
recognized as an alarm (VOLTAGE FREE) .
NOTICE: Alarm input is RECOGNIZED as LOW when alarm signal is on a level with GND,
and recognized as HIGH when alarm signal is FLOATING or 5V. Above is the
internal circuit. Be aware there is a danger of damage, if the alarm input goes to a
negative level or voltage higher than 5V.
If exceeded this will invalidate the
manufacturer’s warranty.
4. External Devices
RS-232C: Connect to PC to control DVRX remotely.
RS 485: On-Alarm connector block for control of PTZ cameras.
RJ-45 (ETHERNET): Connect to LAN, GPRS Modem or WAN.
5. Other External Devices
RELAY Output: Relay Output
SENSOR Input: SENSOR Input (Alarm connection)