... #: RC-A1 ;RC-A2; RC-A4Control of Memory up to 20,000 Users / up to 100,000 Event Buffers Network Communication via ... management system. RC Access Controller fits any type of installations, up to 20,000 users, from single buildings to multiple sites ... a few minutes. In case of power cut, the back-up battery (up to 12V- 17 A/h) ensures numerous hours of full ...