Product: Mecion AC 110V Loud 114dB Red Industrial Motor Mini Car Siren Horn Alarm
Brand: Mecion
Color: Red
The alarm need to be controled by sensor and switch.The correct connecting way is as below: Sensor--Switch--Siren. The siren will stop working after power off,please check whether the sensor connected switch. 

Package Content:1 x Mini Siren;Material:Metal, Plastic, Electronic Parts
Rated Voltage:AC 110V;Decibel:114dB;Model:MS-190
Sound amplifying, small size, great big sound.
Installation: fixed base installation, you can adjust Tuyere up and down
Can warn other cars and pedestrians and it makes your driving safer.

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