This is not an avalanche beacon, but a personal locator beacon used in times of emergency. Unlike an avy beacon, the user must push a button to transmit the signal after extending the antenna (avy beacons, once on, are always transmitting and receiving but only work in about a 40-60 meter radius). The antenna must also not be covered by water or snow in order to transmit. If you are in avalanche country I would first get a partner, understand the dangers involved by educating yourself on slopes angles, types of snow, what to do in an avalanche, etc., and then purchase an avalanche beacon (understand they only work two at a time; one will do you no good). The PLB is used if there are life-threatening injuries after everyone has been recovered. This could include trauma sustained from debris, hypothermia, fractures, shock, etc. A PLB can also be used in all 4 seasons and if you venture out solo, it will work on it's own. Education is key when in dangerous backcountry conditions. Please learn about all the vital info needed before going out!