Does the Laser Egg need to be recalibrated?

The Laser Egg has been designed so that it doesn't need recalibration over time. The design of the airflow inside is optimized to reduce dust accumulation, the optics are all designed to last for over 30,000 hours, and the Laser Egg has a standby mode   that is enabled when the device sits still for 15 minutes.

When Standby Mode is enabled, the Laser Egg's measurement interval is adjusted, thereby doubling the lifetime of the sensor. We have done all this so that the Laser Eggs do not need recalibration, and they work well over the span of several years.