SP-500 is an acoustic and optical siren designed for outdoor mounting, equipped with bright LEDs and a piezoelectric transducer. There are 3 types of modulated sound signals with 120 dB intensity. The device comes with tamper protection against opening or tearing off the wall. The impregnated electronics system is immune to the effect of environmental conditions. The enclosure made of polycarbonate ensures high mechanical strength and aesthetic appearance of the device that remains unchanged despite the passage of time.