diff --git a/src/main/java/de/ph87/homeautomation/device/DeviceDto.java b/src/main/java/de/ph87/homeautomation/device/DeviceDto.java
index 6bead4e..4dece6c 100644
--- a/src/main/java/de/ph87/homeautomation/device/DeviceDto.java
+++ b/src/main/java/de/ph87/homeautomation/device/DeviceDto.java
@@ -1,5 +1,7 @@
 package de.ph87.homeautomation.device;
 
+import de.ph87.homeautomation.device.devices.Device;
+
 public abstract class DeviceDto {
 
   public final long id;
diff --git a/src/main/java/de/ph87/homeautomation/device/DeviceReadService.java b/src/main/java/de/ph87/homeautomation/device/DeviceReadService.java
index df076e3..79f608b 100644
--- a/src/main/java/de/ph87/homeautomation/device/DeviceReadService.java
+++ b/src/main/java/de/ph87/homeautomation/device/DeviceReadService.java
@@ -1,5 +1,6 @@
 package de.ph87.homeautomation.device;
 
+import de.ph87.homeautomation.device.devices.*;
 import de.ph87.homeautomation.property.PropertyService;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -27,6 +28,9 @@ public class DeviceReadService {
     if (device instanceof DeviceSwitch) {
       final DeviceSwitch deviceSwitch = (DeviceSwitch) device;
       return new DeviceSwitchDto(deviceSwitch, propertyService.readBoolean(deviceSwitch.getStatePropertyName()));
+    } else if (device instanceof DeviceNumber) {
+      final DeviceNumber deviceNumber = (DeviceNumber) device;
+      return new DeviceNumberDto(deviceNumber, propertyService.readNumber(deviceNumber.getValuePropertyName()));
     }
     throw new RuntimeException("Not imeplemented: toDto(" + device + ")");
   }
diff --git a/src/main/java/de/ph87/homeautomation/device/DeviceRepository.java b/src/main/java/de/ph87/homeautomation/device/DeviceRepository.java
index 088ba0c..b8fe348 100644
--- a/src/main/java/de/ph87/homeautomation/device/DeviceRepository.java
+++ b/src/main/java/de/ph87/homeautomation/device/DeviceRepository.java
@@ -1,5 +1,6 @@
 package de.ph87.homeautomation.device;
 
+import de.ph87.homeautomation.device.devices.Device;
 import org.springframework.data.repository.CrudRepository;
 
 import java.util.List;
diff --git a/src/main/java/de/ph87/homeautomation/device/DeviceWriteService.java b/src/main/java/de/ph87/homeautomation/device/DeviceWriteService.java
index 54cb2ac..752bd6c 100644
--- a/src/main/java/de/ph87/homeautomation/device/DeviceWriteService.java
+++ b/src/main/java/de/ph87/homeautomation/device/DeviceWriteService.java
@@ -1,6 +1,7 @@
 package de.ph87.homeautomation.device;
 
-import de.ph87.homeautomation.property.PropertyService;
+import de.ph87.homeautomation.device.devices.DeviceNumber;
+import de.ph87.homeautomation.device.devices.DeviceSwitch;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
@@ -16,14 +17,17 @@ public class DeviceWriteService {
 
   private final DeviceRepository deviceRepository;
 
-  private final PropertyService propertyService;
-
   @PostConstruct
   public void postConstruct() {
     final DeviceSwitch deviceSwitch = new DeviceSwitch();
     deviceSwitch.setName("TEST");
     deviceSwitch.setStatePropertyName("knx.group.0/3/6");
     deviceRepository.save(deviceSwitch);
+
+    final DeviceNumber deviceNumber = new DeviceNumber();
+    deviceNumber.setName("Helligkeit");
+    deviceNumber.setValuePropertyName("knx.group.0/5/6");
+    deviceRepository.save(deviceNumber);
   }
 
 }
diff --git a/src/main/java/de/ph87/homeautomation/device/Device.java b/src/main/java/de/ph87/homeautomation/device/devices/Device.java
similarity index 87%
rename from src/main/java/de/ph87/homeautomation/device/Device.java
rename to src/main/java/de/ph87/homeautomation/device/devices/Device.java
index 26f0f4e..1716508 100644
--- a/src/main/java/de/ph87/homeautomation/device/Device.java
+++ b/src/main/java/de/ph87/homeautomation/device/devices/Device.java
@@ -1,4 +1,4 @@
-package de.ph87.homeautomation.device;
+package de.ph87.homeautomation.device.devices;
 
 import lombok.AccessLevel;
 import lombok.Getter;
diff --git a/src/main/java/de/ph87/homeautomation/device/devices/DeviceNumber.java b/src/main/java/de/ph87/homeautomation/device/devices/DeviceNumber.java
new file mode 100644
index 0000000..3fa12d1
--- /dev/null
+++ b/src/main/java/de/ph87/homeautomation/device/devices/DeviceNumber.java
@@ -0,0 +1,17 @@
+package de.ph87.homeautomation.device.devices;
+
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+
+import javax.persistence.Entity;
+
+@Getter
+@Setter
+@ToString
+@Entity
+public class DeviceNumber extends Device {
+
+  private String valuePropertyName;
+
+}
diff --git a/src/main/java/de/ph87/homeautomation/device/devices/DeviceNumberDto.java b/src/main/java/de/ph87/homeautomation/device/devices/DeviceNumberDto.java
new file mode 100644
index 0000000..e353d29
--- /dev/null
+++ b/src/main/java/de/ph87/homeautomation/device/devices/DeviceNumberDto.java
@@ -0,0 +1,14 @@
+package de.ph87.homeautomation.device.devices;
+
+import de.ph87.homeautomation.device.DeviceDto;
+
+public class DeviceNumberDto extends DeviceDto {
+
+  public final Number value;
+
+  public DeviceNumberDto(final DeviceNumber device, final Number value) {
+    super(device);
+    this.value = value;
+  }
+
+}
diff --git a/src/main/java/de/ph87/homeautomation/device/DeviceSwitch.java b/src/main/java/de/ph87/homeautomation/device/devices/DeviceSwitch.java
similarity index 84%
rename from src/main/java/de/ph87/homeautomation/device/DeviceSwitch.java
rename to src/main/java/de/ph87/homeautomation/device/devices/DeviceSwitch.java
index e37d42f..390cea8 100644
--- a/src/main/java/de/ph87/homeautomation/device/DeviceSwitch.java
+++ b/src/main/java/de/ph87/homeautomation/device/devices/DeviceSwitch.java
@@ -1,4 +1,4 @@
-package de.ph87.homeautomation.device;
+package de.ph87.homeautomation.device.devices;
 
 import lombok.Getter;
 import lombok.Setter;
diff --git a/src/main/java/de/ph87/homeautomation/device/DeviceSwitchDto.java b/src/main/java/de/ph87/homeautomation/device/devices/DeviceSwitchDto.java
similarity index 68%
rename from src/main/java/de/ph87/homeautomation/device/DeviceSwitchDto.java
rename to src/main/java/de/ph87/homeautomation/device/devices/DeviceSwitchDto.java
index 8f1fcd6..29a8681 100644
--- a/src/main/java/de/ph87/homeautomation/device/DeviceSwitchDto.java
+++ b/src/main/java/de/ph87/homeautomation/device/devices/DeviceSwitchDto.java
@@ -1,4 +1,6 @@
-package de.ph87.homeautomation.device;
+package de.ph87.homeautomation.device.devices;
+
+import de.ph87.homeautomation.device.DeviceDto;
 
 public class DeviceSwitchDto extends DeviceDto {
 
diff --git a/src/main/java/de/ph87/homeautomation/knx/group/KnxGroupSetService.java b/src/main/java/de/ph87/homeautomation/knx/group/KnxGroupSetService.java
index 5cac6fc..ab92996 100644
--- a/src/main/java/de/ph87/homeautomation/knx/group/KnxGroupSetService.java
+++ b/src/main/java/de/ph87/homeautomation/knx/group/KnxGroupSetService.java
@@ -2,6 +2,7 @@ package de.ph87.homeautomation.knx.group;
 
 import de.ph87.homeautomation.knx.KnxThreadService;
 import de.ph87.homeautomation.property.IPropertyOwner;
+import de.ph87.homeautomation.property.PropertyDto;
 import de.ph87.homeautomation.property.PropertySetException;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
@@ -11,8 +12,10 @@ import org.springframework.context.event.EventListener;
 import org.springframework.stereotype.Service;
 import tuwien.auto.calimero.GroupAddress;
 
+import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
+import java.util.stream.Collectors;
 
 import static de.ph87.homeautomation.shared.Helpers.quoteOrNull;
 
@@ -55,6 +58,25 @@ public class KnxGroupSetService implements IPropertyOwner {
     return knxGroupRepository.findByAddressRaw(parseGroupAddress(propertyName).getRawAddress()).map(KnxGroup::getBooleanValue).orElse(null);
   }
 
+  @Override
+  public Number readNumber(final String propertyName) {
+    return knxGroupRepository.findByAddressRaw(parseGroupAddress(propertyName).getRawAddress()).map(KnxGroup::getNumberValue).orElse(null);
+  }
+
+  @Override
+  public List<PropertyDto> findAllProperties() {
+    return knxGroupRepository.findAll().stream().map(this::toPropertyDto).collect(Collectors.toList());
+  }
+
+  private PropertyDto toPropertyDto(final KnxGroup knxGroup) {
+    return new PropertyDto(
+      knxGroup.getName(),
+      knxGroup.getBooleanValue(),
+      knxGroup.getNumberValue(),
+      knxGroup.getValueTimestamp()
+    );
+  }
+
   private GroupAddress parseGroupAddress(final String propertyName) {
     final Matcher matcher = propertyNamePattern.matcher(propertyName);
     if (matcher.matches()) {
diff --git a/src/main/java/de/ph87/homeautomation/property/IPropertyOwner.java b/src/main/java/de/ph87/homeautomation/property/IPropertyOwner.java
index 6d1c890..864e466 100644
--- a/src/main/java/de/ph87/homeautomation/property/IPropertyOwner.java
+++ b/src/main/java/de/ph87/homeautomation/property/IPropertyOwner.java
@@ -1,5 +1,6 @@
 package de.ph87.homeautomation.property;
 
+import java.util.List;
 import java.util.regex.Pattern;
 
 public interface IPropertyOwner {
@@ -10,4 +11,8 @@ public interface IPropertyOwner {
 
   Boolean readBoolean(String propertyName);
 
+  Number readNumber(String propertyName);
+
+  List<PropertyDto> findAllProperties();
+
 }
diff --git a/src/main/java/de/ph87/homeautomation/property/PropertyController.java b/src/main/java/de/ph87/homeautomation/property/PropertyController.java
new file mode 100644
index 0000000..84954b3
--- /dev/null
+++ b/src/main/java/de/ph87/homeautomation/property/PropertyController.java
@@ -0,0 +1,22 @@
+package de.ph87.homeautomation.property;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("property")
+@RequiredArgsConstructor
+public class PropertyController {
+
+  private final PropertyService propertyService;
+
+  @GetMapping("findAll")
+  public List<PropertyDto> findAll() {
+    return propertyService.findAll();
+  }
+
+}
diff --git a/src/main/java/de/ph87/homeautomation/property/PropertyDto.java b/src/main/java/de/ph87/homeautomation/property/PropertyDto.java
new file mode 100644
index 0000000..3f38623
--- /dev/null
+++ b/src/main/java/de/ph87/homeautomation/property/PropertyDto.java
@@ -0,0 +1,22 @@
+package de.ph87.homeautomation.property;
+
+import java.time.ZonedDateTime;
+
+public class PropertyDto {
+
+  public final String name;
+
+  public final Boolean booleanValue;
+
+  public final Number numberValue;
+
+  public final ZonedDateTime timestamp;
+
+  public PropertyDto(final String name, final Boolean booleanValue, final Number numberValue, final ZonedDateTime timestamp) {
+    this.name = name;
+    this.booleanValue = booleanValue;
+    this.numberValue = numberValue;
+    this.timestamp = timestamp;
+  }
+
+}
diff --git a/src/main/java/de/ph87/homeautomation/property/PropertyService.java b/src/main/java/de/ph87/homeautomation/property/PropertyService.java
index d5daf6f..f0a9718 100644
--- a/src/main/java/de/ph87/homeautomation/property/PropertyService.java
+++ b/src/main/java/de/ph87/homeautomation/property/PropertyService.java
@@ -1,9 +1,12 @@
 package de.ph87.homeautomation.property;
 
+import de.ph87.homeautomation.shared.Helpers;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Set;
 
 @Slf4j
@@ -22,6 +25,10 @@ public class PropertyService {
     return getOwnerOrThrow(propertyName).readBoolean(propertyName);
   }
 
+  public Number readNumber(final String propertyName) {
+    return getOwnerOrThrow(propertyName).readNumber(propertyName);
+  }
+
   private IPropertyOwner getOwnerOrThrow(final String propertyName) {
     return propertyOwners.stream()
       .filter(iPropertyOwner -> iPropertyOwner.getPropertyNamePattern().matcher(propertyName).matches())
@@ -29,4 +36,8 @@ public class PropertyService {
       .orElseThrow(() -> new RuntimeException("No IPropertyOwner found for propertyName: " + propertyName));
   }
 
+  public List<PropertyDto> findAll() {
+    return propertyOwners.stream().map(IPropertyOwner::findAllProperties).reduce(new ArrayList<>(), Helpers::merge);
+  }
+
 }
diff --git a/src/main/java/de/ph87/homeautomation/shared/Helpers.java b/src/main/java/de/ph87/homeautomation/shared/Helpers.java
index 7be9204..651df8a 100644
--- a/src/main/java/de/ph87/homeautomation/shared/Helpers.java
+++ b/src/main/java/de/ph87/homeautomation/shared/Helpers.java
@@ -1,5 +1,8 @@
 package de.ph87.homeautomation.shared;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class Helpers {
 
   public static String quoteOrNull(final String value) {
@@ -30,4 +33,10 @@ public class Helpers {
     return result;
   }
 
+  public static <T> List<T> merge(final List<T> a, final List<T> b) {
+    final List<T> c = new ArrayList<>(a);
+    c.addAll(b);
+    return c;
+  }
+
 }