• Connect up to 128 mic units on one control unit, expandable to 4096 mic units in one system via additional extension control units.

• 8-pin aviation male connector, daisy chain connection, plus discrete gain selector on mic units.

• Max active mic limit (1/2/3/4/5/6), voting, speech permission and other data manage functions.

• Up to 30 configurable VIP units which can speak freely in any meeting mode as long as total active mic is less than 20.

• Five meeting modes supported: FIFO (First-in-First-Out), Normal, Voice Activated, Free, Request.

• In-built DSP (Digital Signal Processor) for low cut, frequency shift and EQ functions.

• Meeting recording function, automatically or manually controlled.

• Unit testing function, test automatically or manually.

• Speak duration and speak ending notice. Speak duration can be set to limit speak time or be turned off.

• Camera tracking system integrated on control unit, with 6 HDMI HD and 6 BNC SD video inputs, with auto tracking function.

• One RS232 serial port for seamless connection with central control system; one RS422 serial port for central control of 6 connected cameras.

• 8-pin DIN aviation female connectors: one for interpreter unit, one for extension control unit, three for mic units.

• RCA sockets: two auxiliary audio inputs for connecting media playback devices; two auxiliary audio outputs for connecting pro amps, two alarm audio inputs for connecting alarm signal from fire center.

• XLR socket: for auxiliary audio output, in parallel with two auxiliary RCA audio outputs (LINE OUT), for connecting pro amps.

• With +5V alarm trigger voltage input, for emergency alarm audio insertion through alarm audio input.

• RJ45 port supports TCP/IP network protocol for network system control via PC software.

• Full-metal housing with enhanced wire and case grounding and anti-static capability at contact & air discharge level 4~8kV.