Dedicated design for internal communication in prison, detention center etc

●Model No.: NAS-8523CV/DV 
●Power Supply & Consumption: DC24V/1A or DC12V/1A，≤3W POE IEEE802.3af  
●Network Protocol:   TCP/IP、UDP、ARP、ICMP、IGMP、SIP、HTTP、FTP、ONVIF 
●Audio Sampling & Bit Rate:   8kHz～44.1kHz，16bit，8kbps-320kbps 
●Video Transmit Rate& Coding:   96Kbps-512Kbps, H.264
●Camera : 1080P  
●Interface: 1 RJ45，1 Relay input，1 Relay output，1 Line / Rec out，1 Line in，1 Cascade port（for connecting alarm control box）
●Working Temperature & Humidity:   -20℃～55℃，≤90%RH（Not condensing）
●Dimensions & Weight: 191 x101 x51,0.95 kg 

Model No.: NAC-20
●Power Supply & Consumption:  DC24V/1A，≤3W
●Interface:  1 Cascade port（for connecting IP video terminal, alarm control box,3-color door light），3 Relay inputs,3 Relay outputs,  1 DIP switch
●Dimensions & Weight: 86 x86mm,0.15 kg

Model No.: NAC-19
●Power Supply & Consumption:  DC24V/1A，≤3W
●Interface: 1 Cascade port（for connecting 3-color door light）
●Dimensions & Weight:  86x86mm,0.05 kg

●Supporting embedded or surface mounted installation.
●Adopting 6mm thick aluminum panel,with stab protection and special screw, being able to activate warning siren whenever the equipment has been forcibly damaged ;
●With double-key design , one-touch calling and one touch alarm to realize full duplex intercom.
●Integrated 1080P HD camera which supports Wide Dynamic Range with functions of strong light inhibition and weak light compensation, enable it to function properly under the circumstance of strong light and weak light.
●Built-in 3W speaker and microphone, available for hands-free calls.
●Compatible with standard ONVIF protocol, can be directly connected to mainstream NVR or other third-party storage device for video recording & traceability.
●Compatible with standard SIP (Session Initiation Protocol), can be registered to VoIP telephone system (mainstream IP PBX such as Cisco,Asterisk, Yealink, etc.) independently.
●With 1×audio output interface for connect with external active speaker or earphone.
●Equipped with 1×Relay Input interface to be connected with emergency button, infrared detector or smoke detector.
●Equipped with 1×Relay Output interface for external linkage with alarm light or electronic door lock.
●Supporting tamper alarm function, being able to activate warning siren whenever the equipment has been forcibly damaged.
●Equipped with standard RJ45 interface, accessible to the system wherever Ethernet is available, supporting cross-segment and cross-router.
NAC-20 Alarm control box
●With brushed aluminum, violence-resistible, all-metal panel and embedded installation；
●With 3 alarm inputs and outputs；available for expansion to 6 alarm inputs and outputs；
NAC-19 Three-color door light
●With different flash colors for different work conditions；
●The flash color of 3-color door light can be customized on demand；