This Magnetic Multifunction LED Beacon + Alarm, 10-110VDC compatible, has six functions including that of the alarm that can be activated or not, thanks to an On/Off button. The functions are manageable with three small sliders that you move to the chosen position (slow single, fast single, double flash, four flashes, eleven flashes, alarm). It is equipped with 40 2835SMD LEDs, which gives it a total power of around 12W, which means that it can be seen from afar!