The higher price of some alarms often reflect the quality of the components used, and these alarms often use less power and there have a longer battery life. More aggressive quality control cost more. All CAVIUS alarms are 100% tested for sensitivity, sound, power consumption and many other points. The manufacturing set up is audited by AFNOR and CNPP from France, one of the worlds best test institutes. All shipments are inspected by ourselves and by a 3rd party testing institute. Furthermore, samples from all production batches are sent to CNPP for test – all to secure the worlds safest alarms for you.