How to reset the Tapo smart bulb
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There are two types of reset available: a soft reset which does not erase the current settings, and a factory reset that erases all of your custom settings and restore them to factory defaults.
You may refer to the video first.
· Soft reset (without losing the configuration settings)
1. Turn the light switch controlling the smart bulb to the on position first.
2. Switch it off and on 5 times, pausing for one second in between.
3. The smart bulb should blink 3 times.
· Factory reset (back to factory default settings)
1. Turn the light switch controlling the smart bulb to the on position first.
2. Switch it off and on 10 times, pausing for one second in between.
3. The smart bulb should blink 3 times.

To restore Kasa smart bulb to factory default settings and re-enable setup mode, please refer to the FAQ:
How to reset TP-Link Kasa smart bulb
Get to know more details of each function and configuration please go to Download Center to download the manual of your product.