IDTECK iTDC Troubleshooting Manual page 19

1) Door does not open
③ What is the recommended cable length of Wiegand cable for Connecting
Controller and Reader?
: Data interference may occur if the recommended length of cable is not used.
Please check the recommended cable length (distance) and install the products within the range.
 The maximum distance of Wiegand cable between controller and reader is 150m, but it is
recommended to install the products
※ Refer to the product manual for recommended cable and distance.
Install within 30~40m
within 30~40m
for stable system operation.
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