You can factory reset the FirstWatch device by any of the following option,
- Press & hold interior button of the lock and apply power
- Press & hold unlock(or #) button and apply power
- Press #HiddenCode# on the keypad
- Launch FirstWatch Smart App ->Select device from the home screen -> settings -> About SR Device -> Factory Reset
Note that performing factory reset will not remove your device from your account but your able to register this device in any other account as fresh device.