This ECCO Model 510 backup alarm is a reliable and effective way to alert those around your truck when you are reversing. With a loud 97 decibel sound, this black plastic alarm is compatible with Ecco brand equipment and runs on 12 volts DC. It is designed specifically for commercial trucks and meets all necessary safety standards. Its model number is 510 and it is a back-up alarm type. This beeper is a necessary addition to your truck to ensure the safety of those around you. Thank you for your time and have a great day!