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Connecting Sensors
Each recorder has up to 16 Sensor inputs. These inputs can be used with devices such as infrared devices, motion device, glass breakage alarms, door and window trips, and many more. The Sensors can be set to Normally Open or Normally Closed inside the software.
There are 4 Common Grounds
COM
Common Ground
Sensor Inputs
Connecting Control Outputs
Each recorder has up to 16 Control Outputs. These outputs can be used to trigger devices such as Sirens, Phone Dialers, Lights, and any other relay activated device. There is no power supplied to the ports. Use an external power supply if necessary.
COM 
Siren, Alarm, Outside Relays
(+)
External Power Supply (DC 12V)
Use 12V, below 300mA. For controlling lights or other devices, use another external relay.
Maximum voltage is 24V AC @ 1 amp
Output uses a Form C Relay
