Loud Siren Alarm Indoor 120dB Wired Home Security Alarm Anti-Theft

Origin : Mainland China Smart home platform : NONE Certification : NONE type : Piezoelectric type (crystal type),Siren use : Public address Volume : 110/+3dB/lm Model : ST-402 Weight : 70kg Rated voltage : 12 Sound power : 125 Overall dimensions : 50*52 Features: 1. 12V voltage,high compatibility,simple and quick installation. 2. Alarm shell is made of ABS flame retardant material,which can be connected to the main engine of alarm outlet. 3. The adhesive sticker on the bottom can be directly attached to the wall for quick and easy,or it can be directly drilled and firmer. 4. Plug connector inner is anode,out is cathode or cut off, Red is Anode, Black is Cathode