High-Speed Industrial Grade Dual Core Chips. 1 GB Audio File Storage. Secure Startup. Batch unified Management of remote Platforms through IP Networks. 2 Alarm Inputs, 1 Audio Input, 1 Audio Output for 1 secondary Speaker (6 W, 8 Ohm), Arming Schedule and Audio Linkage. TTS Speech Synthesis and Text Broadcasting with natural and smooth standard Male and Female Dual Audio Options. Support SIP. Rated Power 6 W, max. Acoustic Pressure 100 dBSPL, all Directions, Frequency Response 300 Hz ~ 15 kHz, Audio File Format MP3 / WAV, Bluetooth, RJ45 10/100 Mbps Ethernet Port, 12 VDC / PoE (802.3at), 18 W, Metal Mesh Cover, Dimension Ø 179 mm × 73.5 mm (Hole size: 160 mm), Operating Temperature -10°C ~ +50°C. Support Hik-Connect, iVMS-4200, HikCentral Professional, Hik-Partner Pro, NVR, MileStone.