PMR stands for Personal Mobile Radio and PMR446 refers to the UHF frequency range 446MHz on which license-free two-way radios are permitted to operate in the European Union on a restricted frequencies from 446.000 to 446.200 MHz without the need for licence-fees or other requirements.
There is a huge range of possibilities for the use of licence-free radios, for example:
So if you are looking for a simple two way radio solution, look no further than retevis license-free PMR446 Walkie Talkies.