![](https://www.acrartex.com/wp-content/uploads/2021/04/ARTEX_-_B406-4_-_Right_Angle_-_No_Shell-300x300.png)
B406-4
The B406-4 has been modified to interface with Boeing’s Master Caution System in conjunction with the DZUS mounted cockpit remote panel (P/N 453-0161) for the B737 and is furthermore approved for use on all models of the B747, B757, B767 and B777.
![](https://dk2ztu5ooimmu.cloudfront.net/ckeditor_assets/pictures/146/406Test_with_desc_-_Tag.gif)