The external optical-acoustic siren SD-3001-BL performs the signaling function in two ways: optically (flashing a red lamp) and acoustically (modulated sound signal with a high volume)The sound signal is generated using a dynamic transducerThe design of the siren ensures a high degree of tamper protection (against opening and against detachment from the ground)
The external housing of the siren is made of high-impact polycarbonate, thanks to which it is characterized by very high mechanical strength and guarantees the aesthetic appearance of the siren even after many years of operation