Cool Little Unit
As the description above says, this is an excellent unit for checking to make sure that everyone is transmitting at a trailhead or throughout the day. You can also do this with most beacons, but it involves spreading people out and/or setting your beacon to check mode, or turning the sensitivity way down (not many beacons do this nowadays). The beauty of the Checker Beacon is that it is small, simple and easy to do, so you end up doing it more often. This is an especially important piece of gear if you often end up as the default trip leader on ski outings as you can give a quick scan and then ski in peace knowing that everyone is beeping.