HIKVISION DS-7604NI-Q1 Quick Start Manual page 13

11 ALARM OUT
12 RS-232 Interface
13 Audio In
14 ALARM OUT
15 eSATA
16 Network Interfaces
with PoE function
Network Video Recorder Quick Start Guide
Connector for alarm output.
Connector for RS-232 devices.
RCA connector for audio input.
Connector for alarm output (optional).
Connects external SATA HDD, CD/DVD-RM.
Network interfaces for the cameras and to provide
power over Ethernet.
12