Messoa NDR891 Guia De Inicio Rapido página 5

1.2 Hardware Overview
Connectors
141mm (5.55")
Ø108mm (4.25")
Power In (Red+/Black-): Connect to DC 12V/AC 24V (NDR891/NDR891E) or
1.
DC 24V/AC 24V (NDR891H/NDR891EH) power supply. If using the DC power
supply, make sure the power connector is wired to correct polarities (Red+/
Black–). If you are to use power via the PoE connection, this connector is not
used.
2. RJ-45 Ethernet Connector: Network & PoE (Power over Ethernet)
connection. Note that PoE is unable to drive the camera whose heater is
operating.
3. BNC: Composite video output
4. Audio Out (Green): Audio output
5. Audio In (Red): Audio input
6. Alarm Out (Orange): Alarm signal output port
Reserved (Green): Reserved contact
RS-485 (Yellow): Contact for RS-485
GND: Ground (electricity) in electrical circuits
7.
Alarm In 1 (Red): Alarm signal input port
Alarm In 2 (Brown): Alarm signal input port
NDR891(H)/NDR891E(H) l
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Quick Start Guide 3