External Testing Certification:CCC Origin:Mainland China Color:Black Quantity:1 pc Alarm Diameter:22mm Alarm Height:10mm Rate Voltage:12V DC Operating Voltage:3 - 24V Frequency:3900500Hz Sound:Di Continuous Feature 1:Piezo Electronic Buzzer Beep Feature 2:Dc 3-24v Piezo Electronic Buzzer Feature 3:Portable Intermittent Continuous Beep Feature 4:Universal Electronic Buzzer Beep Alarm Feature 5:Beep Tone Alarm Ringer Alarm Ringer Continous Sound Feature 6:Car Accessories Buzzer Electromagnetic DC 3-24V Piezo Electronic Buzzer Beep Car 95DB Alarm Ringer Continous Sound For Auto Truck Intermittent Alarm Car Accessories Description: 100% Brand New High class quality and very durable The system turns on automatically when the car engine starts. Beeping alarm prompt step bystep, closer the obstacle, more rapid the alarm sound. Double CPU for rapid response. High quality and easy to install. Specification Color: Black Quantity:1 pc Alarm Diameter:22mm/0.86" Alarm Height:10mm/0.39 2 Mounting Holes distance:30mm/1.18" 2 Wires length:90mm/3.54" Buzzer Type: Piezoelectric Sound Pressure Level 95 dB Rate Voltage: 12V DC Operating Voltage: 3 - 24V Max Current Rating 10mA Frequency 3900500Hz Drive Method: Drive Circuit Built in Mounting Holes Sound:"Di" Continuous Specifications: 100% Brand New High class quality and very durable The system turns on automatically when the car engine starts. Beeping alarm prompt step bystep, closer the obstacle, more rapid the alarm sound. Double CPU for rapid response. High quality and easy to install. Package Included: 1 x 95DB Piezoelectric Buzzer Alarm Notes: Duetothedifferencebetweendifferentmonitors,thepicturesmaynotreflecttheactualcoloroftheitem. Comparethedetailsizeswithyours,pleaseallow1-3cmerror,duetomanualmeasurement. Pleaseleavingamessagebeforeyougivethebadfeedback,iftheproductshavesomeproblems. Thanksforyourunderstandings