LOUD INDUSTRIAL SIREN - This powerful siren produces a piercing air sound at 120 dB, for effective omnidirectional coverage of a big radius. With an output high frequency, it delivers a reliable emergency warning. good-quality CONSTRUCTION - The housing is crafted from ABS and undergoes electrostatic powder spraying for a thick, wear- finish with maximal adhesion and a silky-smooth appearance. The mesh is made of stainless steel, providing superior resistance HEAVY-DUTY AC MOTOR - Featuring a heavy-duty motor combined with an stator for rapid alarm activation. The motor includes a thermal overload protector switch to prevent overheating and long-term operation. Depending on ambient temperature the siren work continuously for periods of approximately minutes and restart once cooled down. Ideal for industrial applications USES - This siren can be activated manually by a switch (not included) or integrated into systems such as smoke detectors, gas sensors, , or anti-theft alarms, which makes it a for industrial environments like factories, warehouses, schools and civil warning systems for tornadoes, floods, fires, and emergencies INSTALLATION - Easy and quick installation involves connecting wires to the power source and securing the base with only screws. Color: As Shown Material: ABS+Metal Package Contents: 1 * Motor sirens Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.