ò For use with the SP-10-S Staff Paging System ò Provides a Vibration Page with numeric display ò LED displays server's assigned number ò Programmable ò Vibration settings (1, 2 , 3) ò Out-of-range indicator ò Special circuitry extends battery life ò No charging stations to maintain ò Requires 2 ôAAAö Batteries (batteries not included