... pager SU-211 and the charger SU-211A2. Where to use it?Restaurant, tea house, coffee shop, KTV, Bar, Club, Hospital ... around.Make restaurant service in order and run fastSave Manpower4. How to use it?When customer wait in line, you can give ... put it on the charger to chargeuntil next time to use it. Each charger base can charge 10 pcs pager at ...