... transmission 4. 99 zones 5. LED display Model: AT-ECS-RName: 99 Zones LED Display Wireless Service Call System! Product OverviewAT-ECS-R Wireless ... table or which room need service from LED Display, the system support total 99 rooms display. This will creat a comfortable situation for ... press any button on the panic button) or wireless sensor, the recoding LED will flash, when you hear a BEEP tone, ...