You have indicated that you have walkie-talkies for a department or a separate building for a care complex. In this case, a license-free radio Kenwood is the best choice! The best-selling radio for this question is the Kenwood TK-3501. We also have the Kenwood TK-3401. This is a digital radio and has better audio quality and slightly more range. This is especially nice if you are unsure about the range.