Description
The LiftMaster 50-SOS12 is a Siren Operated Sensor (SOS) that grants emergency vehicles automated access to gated properties. By listening for a standard "Yelp" siren for 3 seconds, the weather-proof sensor (NEMA 4 enclosure) triggers your gate to open instantly. This ensures that police, fire, and medical responders can enter without needing a keypad code, clicker, or physical key.
