Industrial Covert Unlimited is in its 20th year of operation. CU1.COM has been up since mid 1999. Great security & CCTV products and people who answer the phone!
Check this out!
ETS STW1-SE Pre-amplified Microphone and Speaker W/ Optional Call Switch
The ETS STW1-SE is an omni-directional pre-amplified microphone and power amp / speaker for use in two way surveillance systems. This device can be used in stand alone applications or with DVRs and remote monitoring equipment.
The STW1-SE is suitable for both indoor and outdoor applications, and it even comes with an optional call switch (shown) for paging listener.
It connects directly to ETS switchers / mixers / and amplifiers, or you can use one of our many interface products to make fast and clean connections to DVRs or remote monitoring equipment.