diff --git a/src/main/java/gregtech/api/interfaces/metatileentity/IMetaTileEntity.java b/src/main/java/gregtech/api/interfaces/metatileentity/IMetaTileEntity.java
index 64c5072c..2454392c 100644
--- a/src/main/java/gregtech/api/interfaces/metatileentity/IMetaTileEntity.java
+++ b/src/main/java/gregtech/api/interfaces/metatileentity/IMetaTileEntity.java
@@ -379,6 +379,8 @@ public interface IMetaTileEntity extends ISidedInventory, IFluidTank, IFluidHand
     public void onColorChangeClient(byte aColor);
 
     public int getLightOpacity();
+    
+    public boolean allowGeneralRedstoneOutput();
 
     public void addCollisionBoxesToList(World aWorld, int aX, int aY, int aZ, AxisAlignedBB inputAABB, List<AxisAlignedBB> outputAABB, Entity collider);
 
diff --git a/src/main/java/gregtech/api/metatileentity/BaseMetaTileEntity.java b/src/main/java/gregtech/api/metatileentity/BaseMetaTileEntity.java
index b537ce71..2d3e00ae 100644
--- a/src/main/java/gregtech/api/metatileentity/BaseMetaTileEntity.java
+++ b/src/main/java/gregtech/api/metatileentity/BaseMetaTileEntity.java
@@ -65,7 +65,7 @@ public class BaseMetaTileEntity extends BaseTileEntity implements IGregTechTileE
     private long mTickTimer = 0, oOutput = 0, mAcceptedAmperes = Long.MAX_VALUE;
     private String mOwnerName = "";
     private NBTTagCompound mRecipeStuff = new NBTTagCompound();
-
+    
     private static final Field ENTITY_ITEM_HEALTH_FIELD;
     static
     {
@@ -1414,7 +1414,7 @@ public class BaseMetaTileEntity extends BaseTileEntity implements IGregTechTileE
 
     @Override
     public byte getOutputRedstoneSignal(byte aSide) {
-        return getCoverBehaviorAtSide(aSide).manipulatesSidedRedstoneOutput(aSide, getCoverIDAtSide(aSide), getCoverDataAtSide(aSide), this) ? mSidedRedstone[aSide] : 0;
+        return getCoverBehaviorAtSide(aSide).manipulatesSidedRedstoneOutput(aSide, getCoverIDAtSide(aSide), getCoverDataAtSide(aSide), this) ? mSidedRedstone[aSide] : mMetaTileEntity.allowGeneralRedstoneOutput() ? mSidedRedstone[aSide] : 0;
     }
 
     @Override
diff --git a/src/main/java/gregtech/api/metatileentity/MetaTileEntity.java b/src/main/java/gregtech/api/metatileentity/MetaTileEntity.java
index 662dc59d..0561e871 100644
--- a/src/main/java/gregtech/api/metatileentity/MetaTileEntity.java
+++ b/src/main/java/gregtech/api/metatileentity/MetaTileEntity.java
@@ -863,4 +863,9 @@ public abstract class MetaTileEntity implements IMetaTileEntity {
     public void onCreated(ItemStack aStack, World aWorld, EntityPlayer aPlayer) {
         //
     }
+    
+    @Override
+    public boolean allowGeneralRedstoneOutput(){
+    	return false;
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_Buffer.java b/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_Buffer.java
index abbf5b7e..fba40a13 100644
--- a/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_Buffer.java
+++ b/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_Buffer.java
@@ -224,6 +224,7 @@ public abstract class GT_MetaTileEntity_Buffer extends GT_MetaTileEntity_TieredM
         if (aBaseMetaTileEntity.isAllowedToWork() && aBaseMetaTileEntity.isServerSide() && aBaseMetaTileEntity.isUniversalEnergyStored(getMinimumStoredEU()) && (aBaseMetaTileEntity.hasWorkJustBeenEnabled() || aBaseMetaTileEntity.hasInventoryBeenModified() || aTimer % 200 == 0 || mSuccess > 0)) {
             mSuccess--;
             moveItems(aBaseMetaTileEntity, aTimer);
+            System.out.println("inv "+bInvert+" full "+bRedstoneIfFull);
             aBaseMetaTileEntity.setGenericRedstoneOutput(bInvert);
             if (bRedstoneIfFull) {
                 aBaseMetaTileEntity.setGenericRedstoneOutput(!bInvert);
@@ -256,4 +257,9 @@ public abstract class GT_MetaTileEntity_Buffer extends GT_MetaTileEntity_TieredM
     public boolean allowPutStack(IGregTechTileEntity aBaseMetaTileEntity, int aIndex, byte aSide, ItemStack aStack) {
         return aSide != aBaseMetaTileEntity.getBackFacing();
     }
+    
+    @Override
+    public boolean allowGeneralRedstoneOutput(){
+    	return true;
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_Cleanroom.java b/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_Cleanroom.java
index 015670cb..6d3bf945 100644
--- a/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_Cleanroom.java
+++ b/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_Cleanroom.java
@@ -148,9 +148,18 @@ public class GT_MetaTileEntity_Cleanroom extends GT_MetaTileEntity_MultiBlockBas
         if (doorState) {
             mEfficiency = Math.max(0, mEfficiency - 200);
         }
-
+        for(byte i = 0 ; i<6 ; i++){
+        	byte t = (byte) Math.max(1, (byte)(15/(10000f / mEfficiency)));
+        aBaseMetaTileEntity.setInternalOutputRedstoneSignal(i, t);
+        }
+        
         return true;
     }
+    
+    @Override
+    public boolean allowGeneralRedstoneOutput(){
+    	return true;
+    }
 
     public ITexture[] getTexture(IGregTechTileEntity aBaseMetaTileEntity, byte aSide, byte aFacing, byte aColorIndex, boolean aActive, boolean aRedstone) {
         if (aSide == 0 || aSide == 1) {