A police scanner is a device that allows you to listen to police and other emergency services radio communications. They are popular among hobbyists and enthusiasts, as well as people who want to stay informed about what is happening in their community.
Police scanners can be used to listen to a variety of different types of communications, including police dispatches, fire calls, and ambulance calls. They can also be used to listen to weather reports, traffic updates, and other public safety information.