Description Designed for exclusive use with the M-8080D, the M-800RM Remote Microphone has volume control and zone selector as well as an indicator LED on the gooseneck microphone. M-8080 Series Brochure Specifications Power Source 24V DC (Powered by M-8080D or M-804EX) Audio Output 0 dBV, electronic balanced, Rj45 Connector Gooseneck Microphone Unidirectional electret condenser microphone Frequency Response 20 - 20,000 Hz, ±3 dB Total Harmonic Distortion 0.01% RD port Transmits and receives AES3 digital audio plus control dataConnect to M-8080D or M-804EX, RJ45 Connector USB port Load WAV / MP3 files for chimes sound Volume Control Microphone volume control and all zone selector Zone Selector Can address 1 to 64 different zones Display LCD ScreenDisplays device information: ID, volume, zone selector Indicators Input Signal (Green) x1, Input Peak (Red) x1, Busy (Red) x1, Comm (Green) x1 Operating Temperature 0 °C to +40°C (32°F to 104°F) Operating Humidity 90% RH or less (no condensation) Finish Case: Surface-treated steel plate, black, paint Dimensions 176 (W) x 61.8 H) X 162.4 (D) mm (6.93" X 2.43" X 6.40") Weight 0.8 kg (1.76 lbs.)