Activated all of your sensors at the same time and forgot to label them?  No problem!  Here are a few tips to tell them apart:

Flic Button: Simply do several button pushes and see which counter increments in your IoT Central Dashboard

Occupancy Sensor: Place one in a concealed area such as a desk, and leave the other in an open area picking up movement. The dashboard should reveal which is which based on the "state" counter.

E8 Asset Tag: Similar to the Occupancy Sensor, put one into motion and use the dashboard to determine which is which.

Hobo MX-100: Our favorite, place a warm or cold drink on top of one of the Hobo sensors and see which temperature fluctuates accordingly!