OPTICOM 4 CHANNELS MPEG-4 DIGITAL VIDEO RECORDER - V 1.2 Instruction Manual page 17

4 channels mpeg-4 digital video recorder
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1-3-3. Sensor and alarm connections
Dried contact
Sensor
SENSOR INPUT: Connect two signal lines of sensor (infrared ray sensor, heat perception sensor, magnetic
sensor) to the desired sensor number.
NOTICE
SENSOR inputs need dried contact only. Do not input any electric signal.
---: Not operational
N/O: Normally open type sensor. When magnetic sensor is closed, sensor sends a signal.
N/C: Normally closed type sensor. When magnetic sensor is opened, sensor sends a signal.
ALARM OUTPUT: Use Maximum current: 0.5A/125VAC, Maximum voltage: 1A/30VDC. When controlling
lamp and AC operated equipment, control it using separate outside relay. During normal operation the control
output contact is maintained at "Open" status, and during control output the output contact is changed to
Closed(short)" status.
Alarm
17
Power
Source

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