Maintenance-free: no sensor or battery changes necessaryOffers extended longevity with a 2-year field-replaceable battery and sensorCompact, lightweight design with one-button operationDesigned for a range of harsh environments and extreme temperaturesHibernation mode with case accessory or IntelliDoXAutomated self-test of battery, sensor and electronicsWide-angle flash, which alerts simultaneously with audible and vibrating alarmAutomatic logging of the 35 most recent gas events and bump test resultsCompatible with MicroDock II and Fleet Manager II softwareAffordable, with low cost of ownershipBump testing (qualitative function check) of the sensors, is a recommended function and requires test gas cylinders and bump test accessoriesNote: This monitor does not have a continuous display of the gas concentration, the concentration of the gas will only be displayed when an alarm point is reached