... open door access controller,attendance ER-988 Access controlProduct profileER-988 series products have ER-988C, ER-988CT, ER-988D and ER-988DT, ... set to open the door keeping time, open the door timeout time, protection delay, and alarm time delay.9. Support common open ... :35mm--60mm7,Card access time:< 0.2S8,Records storage:4M BYTE 9,Communications distance: RS-485 network networking at first level ...