do not just purchase an account in case that you do not understand what you need to do. others had a full life, but still are always missed, especially this time of the year. so no, that’s not the case. the handling is not difficult to do, and basically requests of a single and simple "move" that you will need to practice but should master easily. they say unto him, we also go with thee. the filter needs 2 to 5 seconds to settle at start up, therefore you need to keep the sensor motionless and more or less level for a few seconds. 