【Working Principle】Motion sensor alarm siren for motion detection, stand by after power-on, and activate the siren after detection of the movement of people or objects. This siren microwave motion detection is more sensitive, it is recommended to install in open areas to avoid interference, resulting in false alarms! The machine need to do some wiring, comes without plug switch. If the alarm is missing the remote control, you can contact us and we will send remote control for you!

【Security alarm 】Motion activation With advanced sensitive motion sensors, people or animals motion within 0-32 feet will be detected and audible and visual alerts will be activated. Never miss any situation including people and animals. Alarm recommended installation height: (2-2.5)m/(6.5-8.2)ft, this installation height is more conducive to alarm motion detection of people or animals

【Loud alarm】Horn of alarms uses high-quality alloy speakers, which will spread the sound wave effectively. The sound inbuilt can alarm once it is touched.The volume can reach up to 120dB（you can adjust the volume by remote control）

【Remote control】Equipped with a 8m/26.2ft(remote control distance ) infrared remote, the alarm volume and tone can be adjusted seperately. Alarm siren has 12 kinds of sound, you can choose the tone you like.you can upload your sound by USB port.

【Waterproof industrial outdoor siren alarm】: Made of IP65 level material, the alarm is dust proof and weather proof. Even it is rainy, the alarm can still work outdoor! It can be widely used in factories, machine rooms, garages, construction sites, warehouse, construction sites, electrical equipment and other places in dangerous areas, warning for people entering the detection area, etc.