Features: 1. LCD Number display panel is capable of programming up to 30 wireless call buttons/motion sensors; 2. 4 Adjustable Volumes in 7 alert tones/chimes including alarm siren PLUS Silent Vibration Mode; 3. NEVER Miss a Call: once the SP30 pager receives a signal from the call lights, when on REPEAT mode, the alert tone continue beeping periodically until all calls are cleared; for less disturbed option, switch to ONE-OFF mode as the pager alerts once ONLY with number remains displaying on screen; 4. The maximum operating range between the SP30 pager and call button for elderly is 500 ft* without obstacle; 5. Memory Function: Smart memory function, it remembers your set volumes/chimes even after a power outage; 6. Call button with breakaway lanyard provided the option to hang on neck for elderly monitoring or seniors when calling for help; 7. Dual Power Source Options: Either plug the Companion Pager SP30 with AC power adapter (purchase separately) to fixed it on wall or insert 2 AA batteries (included) to carry it on the go. *Environmental factors such as concrete or brick walls and heavy electronic equipment may affect the range. Fully extend the telescopic antenna for the most optimal signal range.