LT Security LTD831J5 - Manual (Page 25)

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4/8/16CH Triplex DVR
Digital Video Recorder
7. Sensor Installation
The DVR unit can be connected up to 4/8/16 sensor inputs as following figure.
Each sensor has two lines: signal and ground in order to sense the sensor’s status.
7.1. 4 CH Triplex DVR
7.2. 8 CH Triplex DVR
7.3. 16 CH Triplex DVR