1、Design with heavy‑duty permanent magnet motors, this motor‑driven alarm ensures years of reliable service and produces a loud sound for short duty cycles. 2、The angle of the alarm can be adjusted vertically for flexible installation and accurate pointing of the sound to the position you want. 3、The shell and mounting bracket produced by sturdy aluminum alloy and ABS resin for easy installation with a simple two‑wire connection. 4、A variety of voltage specifications are available for all vehicles equipped with 12V system, suitable for transmitting signals in small lifts, transport vehicles, small ship machinery warehouses, etc. 5、Can be used for sites requiring safety warnings, for example, construction sites, substations and factories, natural disasters, etc. device. 6、High-quality pure copper motor, not easy to generate heat and damage, stable operation, long service life, and the rotation speed reaches 10,000 rev / sec.