Activity Detector (GregTech 5)

The Activity Detector is a cover added by GregTech 5. It can be attached to all GregTech machines. When attached to a machine, it blocks interaction on the side it has been attached to and emits a Redstone signal of strength 15 instead whenever the machine is working; for normal machines, this means whenever the machine is processing items; For Boilers, this means whenever the Boiler is burning fuel. It can be used as a form of simple remote monitoring, to see if and when machines are in use or if Boilers are burning fuel.