diff --git a/FlippR-Driver/src/output/items/IOutputDisplay.h b/FlippR-Driver/src/output/items/IOutputDisplay.h
deleted file mode 100644
index ffeb66b..0000000
--- a/FlippR-Driver/src/output/items/IOutputDisplay.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * IOutputDisplay.h
- *
- *  Created on: Nov 20, 2018
- *      Author: johannes
- */
-
-#ifndef SRC_OUTPUT_IOUTPUTDISPLAY_H_
-#define SRC_OUTPUT_IOUTPUTDISPLAY_H_
-
-namespace flippR_driver
-{
-namespace output
-{
-namespace items
-{
-
-class IDisplay
-{
-
-public:
-  IDisplay();
-  virtual ~IDisplay();
-
-  virtual void write_score(int score) = 0;
-  virtual void write_content(std::array<char, DigitCount> content) = 0;
-};
-
-}
-}
-}
-
-
-#endif /* SRC_OUTPUT_IOUTPUTDISPLAY_H_ */
diff --git a/FlippR-Driver/src/output/items/IOutputItem.h b/FlippR-Driver/src/output/items/IOutputItem.h
index 846ba35..e1922ee 100644
--- a/FlippR-Driver/src/output/items/IOutputItem.h
+++ b/FlippR-Driver/src/output/items/IOutputItem.h
@@ -19,7 +19,6 @@ namespace items
 class IOutputItem
 {
   virtual ~IOutputItem();
-  virtual bool isActivated() = 0;
   virtual bool activate() = 0;
   virtual bool deactivate() = 0;
 };
diff --git a/FlippR-Driver/src/output/items/OutputItem.cpp b/FlippR-Driver/src/output/items/OutputItem.cpp
new file mode 100644
index 0000000..c624fa4
--- /dev/null
+++ b/FlippR-Driver/src/output/items/OutputItem.cpp
@@ -0,0 +1,24 @@
+//
+// Created by rhetenor on 21.11.18.
+//
+
+namespace flippR_driver
+{
+namespace output
+{
+namespace items
+{
+
+void OutputItem::activate()
+{
+
+}
+
+void OutputItem::deactivate()
+{
+
+}
+
+}
+}
+}
diff --git a/FlippR-Driver/src/output/items/OutputItem.h b/FlippR-Driver/src/output/items/OutputItem.h
index 68447d9..0686ddb 100644
--- a/FlippR-Driver/src/output/items/OutputItem.h
+++ b/FlippR-Driver/src/output/items/OutputItem.h
@@ -34,6 +34,7 @@ protected:
 
   std::shared_ptr<utility::IOutputGPIOInterface> output_gpio_interface;
 
+protected:
   void activate();
   void deactivate();
 };
diff --git a/FlippR-Driver/src/output/items/Solenoid.cpp b/FlippR-Driver/src/output/items/Solenoid.cpp
index d3f1fc5..54f27cb 100644
--- a/FlippR-Driver/src/output/items/Solenoid.cpp
+++ b/FlippR-Driver/src/output/items/Solenoid.cpp
@@ -13,6 +13,7 @@ namespace output
 {
 namespace items
 {
+
 Solenoid::Solenoid(std::shared_ptr<utility::IOutputGPIOInterface> output_gpio_interface, int i2c_address, int data_pin, std::string name, std::chrono::milliseconds deactivation_time)
 :
 OutputItem(output_gpio_interface, i2c_address, data_pin, name),
@@ -23,10 +24,11 @@ void Solenoid::triggerTask()
 {
   OutputItem::activate();
 
-  std::this_thread::sleep_for(50 /*todo change magic number */);
+  std::this_thread::sleep_for(deactivation_time);
 
   OutputItem::deactivate();
 }
+
 void Solenoid::trigger()
 {
   std::async(std::launch::async, &Solenoid::triggerTask);
diff --git a/FlippR-Driver/src/output/items/Solenoid.h b/FlippR-Driver/src/output/items/Solenoid.h
index 183282c..95b85a3 100644
--- a/FlippR-Driver/src/output/items/Solenoid.h
+++ b/FlippR-Driver/src/output/items/Solenoid.h
@@ -30,6 +30,9 @@ public:
 
   void trigger();
 
+private:
+  std::chrono::milliseconds deactivation_time;
+
 private:
   virtual void triggerTask();
 
diff --git a/FlippR-Driver/src/output/items/Sound.cpp b/FlippR-Driver/src/output/items/Sound.cpp
index 96ad1ec..da21146 100644
--- a/FlippR-Driver/src/output/items/Sound.cpp
+++ b/FlippR-Driver/src/output/items/Sound.cpp
@@ -18,7 +18,8 @@ namespace items
 
 Sound::Sound(std::shared_ptr<utility::IOutputGPIOInterface> output_gpio_interface, int i2c_address, int data_pin, std::string name)
 :
-OutputItem(output_gpio_interface, i2c_address, data_pin, name)
+OutputItem(output_gpio_interface, i2c_address, data_pin, name),
+deactivation_time(deactivation_time)
 {}
 
 void Sound::play()
@@ -30,7 +31,7 @@ void Sound::playTask()
 {
   OutputItem::activate();
 
-  std::this_thread::sleep_for(50 /*todo change magic number */);
+  std::this_thread::sleep_for(deactivation_time);
 
   OutputItem::deactivate();
 }
diff --git a/FlippR-Driver/src/output/items/Sound.h b/FlippR-Driver/src/output/items/Sound.h
index 08eebff..1fb2441 100644
--- a/FlippR-Driver/src/output/items/Sound.h
+++ b/FlippR-Driver/src/output/items/Sound.h
@@ -25,11 +25,14 @@ namespace items
 class Sound : public ISound, OutputItem
 {
 public:
-	Sound(std::shared_ptr<utility::IOutputGPIOInterface> output_gpio_interface, int i2c_address, int data_pin, std::string name);
+	Sound(std::shared_ptr<utility::IOutputGPIOInterface> output_gpio_interface, int i2c_address, int data_pin, std::string name, std::chrono::milliseconds deactivation_time);
 	virtual ~Sound() = default;
 
 	virtual void play();
 
+private:
+	std::chrono::milliseconds deactivation_time;
+
 private:
 	virtual void playTask();
 };