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 STW7.

Kit Includes

• 4 x STW1 microphone/speaker
•  STW4 Base Station
• AC Adaptor
• 3’ twin RCA Patch cable.
• 4 x Warning label.
• STW1 mounting screws.
• Installation instructions.

STW1 Mic./speaker Specifications

• Omni-directional element w/25’ range.
• Low noise MOSFET pre-amplifier.
• Line level, unbalanced output.
• Adjustable gain.
• Treble boost circuit. Selectable on/off.
• Limiter circuit. Selectable on/off.
• Easy cable run termination.
• Flush or surface mountable. 
• Power: 12 VDC @ 10mA.
• 2.25” .25w speaker.
• 70V line speaker input.
• Stainless steel cover plate.

STW4 Base station

• Page mode enables talk back to all 4 zones at once.
• Remote speaker & microphone volume controls.      
• Internal talk back microphone
• Master volume control.
• Press to talk button.
• When paged from a zone, that zone is selected automatically for talk back.
• VCR/DVR In/outs can be used to record both sides of the conversation.
• Tape monitor in/out indicator.
• Headphone jack for private listening.
• Euro-style connectors makes cable terminations fast and clean.