ETS SM7 4 Zone Audio Surveillance Kit

4 SM1 Microphones, SM4 Switcher/Mixer/Amplifier. Complete 4 zone, manual switching, audio surveillance system. Can be used independently for monitoring live or with tape recorders / DVRs recording and playback. Two modes operation: Switcher (select one zones) mixer any combination zones).

SM1 Microphone

• Omni-directional element w/25’ range
• Low noise MOSFET preamplifier
• Line level, unbalanced output
• Adjustable gain
• Treble boost circuit. Selectable on/off
•  Enhances clarity time lapse recordings
• Limiter on/off
• 3 position Euro-style connector makes cable termination fast clean
• Flush mount
• Power: 12 VDC @ 10mA

SM4 Mixer

• In/out switches level controls each microphone channel
• Standard RCA jacks connection to recorders, DVRs, etc
• All settings stored in non-volatile memory
• 1 Watt power amplifier & 3” speaker
• Euro-style connectors terminations clean
• Tape monitor switch
• 3.5mm Headphone jack
• Power: 250mA