SMC Networks ZK2-ZS L A Series Operation Manual page 60

•How to entry the security code
The left most digit starts flashing.
Press the
Press the
(If the button is pressed when the last digit is flashing, the left
most digit starts flashing again).
After the setting is complete, Press and hold the
for 1 second or longer.
(If an operation is not performed for 30 seconds during input or
change of the security code, it will return to measurement mode.)
If the security code is used, it becomes necessary to enter the security code to release the key lock.
The security code number can be set to a different value by an operator.
The default setting is "000".
Refer to page 68 when the security code is used.
or button to change the value.
button to make the next digit to the right flash.
button
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Doc. No. DOC1051887