SD-MIC is a versatile unit for broadcasting and live announcements across different zones. Its programmable buttons allow for easy operation, including paging, BGM playback, business announcements, voice alarms, volume control, recording, and monitoring.

Features:

• Microphone Support: Compatible with gooseneck or PTT microphones for live broadcasts.
• Audio Monitoring: Built-in loudspeaker for monitoring CH1/CH2 audio.
• Temporary Recording: Enables quick recording and playback of messages.
• External Audio Input: Line input for connecting external BGM sources.
• Volume Control: Adjustable volume for microphone, line input, and loudspeaker.
• Programmable Buttons: Eight customizable buttons for various functions.
• Expandable: Supports additional buttons through extension key modules.
• System Monitoring: Automatic supervision of microphone and communication.
• Long-Distance Communication: Operates up to 600 meters from the main unit via twisted-pair cable.
• Power Efficiency: Can be powered by the main control unit.
• Multiple Stations: Supports up to six remote call stations.

Specifications

Power Supply

• Voltage: DC 24V
• Power Consumption: 10W

Microphone Input

• Sensitivity: -50dB ± 3dB
• Signal-to-Noise Ratio (SNR): >60dB (A-weighted)
• Optimal Pickup Distance: 10-20cm

Line Input

• Input Signal: 1V (0dBV)
• Input Impedance: 10kΩ
• Frequency Response: 80Hz – 18kHz, ±3dB
• Signal-to-Noise Ratio (SNR): >85dB (A-weighted)

Monitoring Loudspeaker

• Output: 2W/8Ω

Operating Conditions

• Humidity: <95%, without condensation
• Operating Temperature: -10°C to +55°C (14°F to +131°F)
• Storage Temperature: -40°C to +70°C (-40°F to +158°F)