Our SensorVault™ technology extends sensor life by sealing the sensors from oxygen in the air. during storage. If the combustion analyzer is powered off improperly (for example, the battery runs out while powered on) it is possible for the sensor seal to become out of sync with the power on state. When plugging into a power source the combustion analyzer will check to make sure the sensor sealing is correctly synced with the button, if the analyzer detects the sensor is out of sync the analyzer will automatically power on.
