Since 1992, the original Siren Operated Sensor (SOS) has been used to open residential, commercial, airport, government, and military gates during an emergency. SOS is currently used throughout North America, South America, and in Europe. If you need your gates, doors, parking arms, barriers, or roll-up doors to open for emergency responders, then you need an SOS installed on each of these devices today!

Once the "Yelp" siren has been recognized for 3 seconds, a trigger is sent to open the gate. The SOS is the most cost-effective way for emergency responders to access your home or business without stopping or leaving their vehicle to enter a code or to use a key.

The reliability of the SOS Emergency Access System has made it mandatory in many communities throughout the world. Making your gate siren activated saves time and is a big step to saving lives and property.