Clover DV1670 Instruction Manual page 30

Chapter 2. Hardware Description
Input Voltage Range: -5VDC (minimum) to 40VDC (maximum)
Example 1. Dry contact sensor direct to DVR
This example is the simplest form of sensor connection for DVR unit. Sensors dedicated only for the
function for the DVR and example below depicts that Motion Sensors are not outputting any type of
voltage (dry contact).
Sensors are outputting no
voltage, however DVR unit
requires 5 volt DC to get
response for sensor.
Example 2. Dry contact and 12 Volt DC combination direct to DVR
For some installation you may have sensors outputting different voltage that may require voltage
conversion device.
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3. Rear Port Specification and Connection Examples
+5V DC +5V DC
Sensor 1
Figure 17 Basic Sensor Connection
+5V DC
Sensor 2
Sensor 3
+5V DC
Sensor 4