It provides local control, new features and easy integration with home automation systems.
You may find more information on github
On delivery it is already in factory reset state.
If you want to factory reset afterwords, check this link Tasmota Button Usage
When held continuously for 40 seconds (Configurable with SetOption32, value is 10x the configured hold time) Tasmota will reset to firmware defaults and restart.
You may try the following links for more details on setting up a Tasmota device with MQTT:
You may get some inspiration on the below links:
Use your browser and the Tasmota Device Locater.
The Smart Bulb is compatible with the "AiLight" 27 module.
The installation is done as for any other Tasmota device. However you need to be extremely careful when setting up the Wifi network, since there are no button to do a factory reset. Wrong SSID or password and the bulb is bricked!
For installation follow the standard procedure.