The Paradox REM101 is a single-button remote control, with easy panic functionality and battery test button. It is typically used to transmit a medical emergency or other type of panic signal to the monitoring station, though it can also be used for various other functions. Due to its use as a panic remote, a special battery test button (the LED) is provided to easily check battery level. The REM101 comes with a detachable lanyard to be worn as a pendant.