Programmable speaker
The programmable speaker is a circuit network entity that is capable of producing alerts in the form of sound, and elements on nearby players' GUIs. It can be connected to the circuit network to produce an alert when a signal drops below a certain value, for example.
Ingredients: 5× Copper cable4× Electronic circuit3× Iron plate4× Iron stick
Output: 1 per craft → 30/min (single machine, no modules)
