The Commander3 Series Emergency Notification Evacuation Signals is a wall mount, low profile strobe or horn/strobe combination that offers dependable audible and visual alarms for warning and emergency notification. Applications include severe weather, evacuation, emergency response and many more.Main FeaturesPrewire entire system, install mounting bracket, then install signalsInput terminals accept 12 to 18AWGSwitch selection for high or low dBASwitch for chime, whoop, mechanical and 2400Hz toneSwitch for continuous or temporal 3 (not available on whoop tone)