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Open your gate with the sound of a
siren when there is an emergency!

The SOS-YDT version stands for YELP/DECIBEL/TIME. It's programmed to respond to emergency vehicle sirens' "YELP" and open the gate in 2.5 seconds. If the responder is not using the "YELP", yet the decibel level remains high for an additional 2 seconds, the YDT will trigger the gate to open. This version will therefore respond to the "wail" or any consistent sound producing 4.5 seconds of high decibel. The SOS-YDT is proximity adjustable, and has switchable safety options built into the circuit board.

Basic Concept
The Siren-Operated Sensor (SOS) is designed to respond swiftly to the "YELP" mode of all standard emergency vehicle sirens. A reminder decal is provided to be placed on each entry gate. Responders already own their siren. This device represents Public Safety without spending Public Funds. At this writing (2001), the SOS is the nation's most widely used Uniform Emergency Gate Access.

Installation and Testing
Since all gate operators use 12 to 24 Volts AC or DC for their electronic controls, this source can easily be used to power the mini requirements of the SOS. A demonstration "YELP" audio tape is provided, along with instructions, with each SOS sold.

Technical Specifications
The Frequency response of the SOS Siren-Operated Sensor is from 200 Hz to 10 KHz. The SOS relies on a time-varying frequency input in this range. This, plus proprietary techniques, allows the microprocessor to respond to the siren's "YELP" with a dry relay closure in 2.5 seconds.
" The SOS uses an omnidirectional microphone. Alignment is not necessary.
" Range of the SOS is adjustable - 5 to 50 feet or more. A potentiometer located on the PC board provides this adjustability. The SOS is not affected by ambient light.
" The PC board for the SOS is mounted in a 3.2" x 6.5" x 3.2" rain-tight enclosure.
" Weight is approximately 10 ounces.
" The power requirements for the SOS are 12/24 Volts AC/DC with approximately 2.5 mA draw. Momentary relay activation or switchable to a 10-minute hold.
Warranty
The SOS has a five-year warranty when installed according to the manufacturer's specifications.

SOS-YDT Siren-Operated Sensor $378.00