The 3 Watt Horn Speaker PSSHORN a high-efficiency 100 Volt line speaker designed for emergency warning systems. It is about ten decibels louder than a cone-type speaker with the same input power. Selectable power taps facilitate sound level adjustment to meet project requirements such as area coverage and ambient noise level. The adjustable mounting bracket makes it easy to position the horn speaker for optimal sound dispersion. To ensure standards compliance, the horn speaker is wired for Loop In / Loop Out connection and incorporates a 100 Vrms line transformer and a series blocking capacitor. Recommended for indoor applications such as lobbies, corridors, shopping centres, passenger terminals, offices, schools, hospitals, factories and plant rooms.