Jenix Wired Mini Horn Siren Home Security Sound Alarm System 120dB DC 12V. 100% brand new and high quality Material: Plastic and Metal Color: See pictures At 120dbs, this siren will not only alert the neighbors of the intrusion, but scare away the burglar right out of your house! This piercing, plug-in siren can be plugged into your keypad/Console. It works with your system, responding to signals from an alerted Keypad/Console. No intruder will hang around when one of these sirens sounds! Specifications: Rated voltage: 12V DC Sound index: 120dB Sound frequency: 3.8KH2+10% Transmit speed: 3H2 increase or discrease 10% Size: Diameter: 5cm/1.97" Height: 4.8cm/1.89" Package includes: 1Pc x Ear Piercing Indoor mini Siren.