The AL6000 has passed and carries approvals from the US Department of Transport, Food and Drug Administration, Australian Standard Certified and also has CE and RoHS certification. The device allows the user to insert a pre-calibrated sensor module. Simply remove the top cover, remove the old sensor and snap in a new sensor when required–very easy and quick with no downtime. Cheaper breathalysers do not offer this feature, meaning that you have to return the device to the manufacturer for expensive and time-consuming calibration. Extra Mouthpieces available.