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2. External Sensor and Relay Installation
(1) Selection of sensor type
Choose Anode type (When it works, 0 ohm is remained) as a sensor and NO type (Normal Open type. When it works,
0 ohm is remained) as a Relay.
(2) Required Specification of Sensor connecting wire
Connection wire that has small internal resistance is recommended. Please refer to the following.
(1) Number of Sensor: 8 ea
(2) Voltage between sensor input and GND, when sensor input is opened: +5 Volt
(3) Terminal voltage: High = stand by, Low = Activated
(4) Max resistance for activation: 500 Ohm
(3) Example of operation test of external devices including a Light
D-sub type
I/O connector
73
DIGITAL VIDEO RECORDER
QLR1660 card
Cable
Video Input/Output
D-Sub Ports
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