My design for the 737 Master Caution Annunciator. It is fully operational with push button and can be edited for your needs. I 3d printed this. One adjusment I would make next time is to add a further 2 LEDs in the opposite corners. You will need 2 LED's (Red) and one 12mm tactile switch with round push button.

This design is worked around the decal supplied by www.opencockpitparts.com. You can create your own from this file.

737 Master Caution Annunciator

SKU: Master Caution Button
£1.00Price

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