There are two reset options:
1. Partial reset of several settings via web app.
2. Full factory reset: When AmbiScreen Eye is plugged to power after approx. 40 seconds red LED on the back of device is turned on for window of 5 seconds. If you unplug power during this window (e.g. 1-2 seconds when red led is on) and then plug in power again, factory defaults will be recovered on the boot. (IMPORTANT: when turning off device from power always remove from device microusb cable at connector side of device – that is the back side of device).