Features: 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. Specification: Item Type: Electric Motor Alarm Material: Aluminum Alloy ABS Resin Shell + Pure Copper Motor Power: 40W Voltage: DC12V Sound Level: 120 dB Frequency: 420Hz Function: 180 can be rotated to adjust the direction Fitment: Suitable for all 12V vehicles, trucks, fire trucks, RVs, trucks, pickups, motorcycles, yachts, etc., and can also be used as alarm horns for household use, etc. PackageList: 1 x Electric Motor Alarm