101-001 (iTDC), 101-002 (EIO88), 101-145 (iTDCSR) -76- Users Manual
IDTeck – iTDC 2~4 DOOR ACCESS CONTROLLER
technician if you cannot be sure how to do it.
4. When a multi-drop communication doesn’t work, test one-by-one communication first.
5. If the trouble remains after the procedure above, contact a designated service centre.