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info Zyxel
Status LED blinks slowly
WPS (WiFi Protected Setup) is waiting for another WPS device connection.
? What Causes This
The WRE2206 may be in startup, rebooting, or resetting phase.
ⓘ What This Means
Ensure that a wireless client/AP initiating the PBC press button method has been initiated properly.
Source: page 9 of the official manual
From the manual
This error code appears in:
Zyxel Wre2206 Wireless N300 Range Extender User Guide