The units are used for the display, operation and parameterization of specific safety- and non-safety-related burner functions
Key plant data and fault codes can be queried and displayed
Communication between AZL2 and the flame safeguard / burner control takes place via the BCI interface

Housing of modern design made of recyclable plastic
Flame-resistant housing material
Display of operating states, program phases and fault codes
Setting of parameters and ratio curves
8-digit LCD with bars
LCD with backlit display (support dependent on respective flame safeguard / burner control)
5 multifunction buttons with reset facility
BCI interface
Prepared for extra fault indication via LED (on request)
Backup function / restore function with specific types of flame safeguards / burner controls (on request)

AZL21.00A9 - Display and Operating Unit for wall mounting, Degree of Protection IP40 when mounted
AZL23.00A9 - Display and Operating Unit for flush-panel mounting, Degree of Protection IP54 when mounted