Digital Mobile Radio (DMR) is a digital radio standard used for professional mobile radio communications. It enables clear voice communication and efficient data transmission over radio frequencies. DMR is widely used by organizations such as public safety agencies, transportation services, and businesses for reliable communication. DMR operates in two main tiers: Tier I is for unlicensed use, while Tier II is for licensed users, offering features like group calls and text messaging. The technology allows for better spectrum efficiency and improved audio quality compared to traditional analog systems, making it a popular choice for modern communication needs.