2V 3V 5V 6V 9V 12V DC Piezo Electronic Buzzer Very Load Alarm Electric Security Siren Horn 120dB@12VDC
120dB@12VDC, it will less dB when at low voltage, but it's very loud@5VDC, and
it's loud@3VDCPlease insert the plug into the panel and fix it by sticker
paper or screw.You can also cut the wire and extend it.At 120dbs, this siren
will not only alert the neighbors of the intrusion, but scare away the burglar
right out of your house!Specifications:Rated voltage: 12V DC Sound level:
120dB Sound frequency: 3.8KH2+10% Transmit speed: 3H2 increase or discrease
10% Material: Plastic Color: Black&Red Size: diameter 54mm, height 48mm
 
Product Features
  

         
DC2 to 12V Alarm Siren with 3.5mm Plug Connector
         
120dB@12VDC, it's loud even at 3V or 5VDC
         
Plug connector inner is anode,out is cathode or cut off, Red is Anode, Black is Cathode
         
Can mount by Sticker or Screws
         
What you get:1xAlarm Siren with sticker