Needs Maintainance Cover

The Needs Maintainance [sic] Cover is a cover added by GregTech 5 Unofficial. It is used to emit Redstone signals when a number of maintenance issues arise.

Usage
Place the Needs Maintainance Cover on any Control Block of a Multiblock that needs maintenance. By clicking on the cover with a screwdriver the number of maintenance issues needed to emit a redstone signal must be changed.

Tip
Since most multiblock controllers have no free side to place redstone logic next to them, it is recommended to use a Redstone Transmitter attached to Input/Output Hatches/Buses.