1. Using a phillips screwdriver remove the four screws holding the lid and remove it
2. Remove one battery, wait 5 sec, and insert battery back into clips
3. Make sure that there is no blue light on the chip inside
4. Locate and push the Clear (button 1) button. This button needs to be held depressed when device is activated to wipe WiFi configuration

A float sensor, sometimes called a float switch,  is a device that is used to sense the level of a fluid. It acts as a mechanical switch. There is a float ring surrounding the sensor. When the float is at the bottom, the switch is open.