ETS is a quality manufacturer of Sound Surveillance tm audio products for use with DVRs, I/P cameras, CCTV monitors (with built in speakers), one and two way remote monitoring equipment and accessories. ETS manufactures pre-amplified microphones, weather resistant microphones, audio amplifiers, audio switchers, audio mixers; sound activated audio switchers, speakers and DVR interface equipment. See below for details on the ETS SMI-5.

Kit Includes

• 4 x SM1 Pre-amplified microphone.
•  SMI-4 Interface Box
• AC Adaptor
• 4 x 3’ RCA or 3.5mm Patch cable.
• 4 x Warning label.
• SM1 mounting screws.
• Installation instructions.

SM1 Microphone Specifications

• Omni-directional Electret element.
• 25’ range in all directions.
• Frequency response: 200-16Khz.
• Low noise MOSFET pre-amplifier.
• Line level, unbalanced output.
• Adjustable gain.
• Treble boost circuit. Selectable on/off. 
• Limiter circuit. Selectable on/off.
• 3 positions Euro-style connector makes cable termination fast and clean.
• Flush mountable. Can be mounted on a single gang electrical box. 
• Power: 12 VDC @ 10mA

SMI-4 Interface Adapter Specifications

• RCA or 3.5mm jacks for connection to DVRs, Remote monitoring equipment, etc.
• Euro-style connector makes cable terminations fast and clean.
• LED power indicator.
• Power:12 VDC @ 40mA
• Reverse polarity protected and fused.
• Dimensions: L 4.2 x W 2.7 x H 1.6