The Warn Module is an optional module for the Interdiction Matrix.

Recipe

Recipe Type	Ingredients	Outputs	Recipe preview
Recipe Type Shaped Crafting	Ingredients 2x Note Block 1x Focus Matrix	Outputs 1x Warn Module	Recipe preview Note Block Focus Matrix Note Block Warn Module
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Effect

The Warn Module can be placed in the matrix slots of an Interdiction Matrix to periodically send a warning to all unauthorized players within its Action Range.