diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/BooleanTriggerRepository.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/BooleanTriggerRepository.java
new file mode 100644
index 0000000..932f4c8
--- /dev/null
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/BooleanTriggerRepository.java
@@ -0,0 +1,4 @@
+package ch.usi.inf.sa4.sanmarinoes.smarthut.models;
+
+public interface BooleanTriggerRepository
+        extends TriggerRepository<BooleanTrigger<? extends Device>> {}
diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Device.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Device.java
index 7fd7b80..0114ac3 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Device.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Device.java
@@ -4,7 +4,6 @@ import ch.usi.inf.sa4.sanmarinoes.smarthut.config.GsonExclude;
 import com.google.gson.annotations.SerializedName;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.HashSet;
-import java.util.List;
 import java.util.Set;
 import javax.persistence.*;
 import javax.validation.constraints.NotNull;
@@ -92,8 +91,4 @@ public abstract class Device {
         this.kind = kind;
         this.flowType = flowType;
     }
-
-    public List<Trigger<? extends Device>> triggeredTriggers() {
-        return List.of();
-    }
 }
diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/RangeTriggerRepository.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/RangeTriggerRepository.java
new file mode 100644
index 0000000..084a70f
--- /dev/null
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/RangeTriggerRepository.java
@@ -0,0 +1,3 @@
+package ch.usi.inf.sa4.sanmarinoes.smarthut.models;
+
+public interface RangeTriggerRepository extends TriggerRepository<RangeTrigger<? extends Device>> {}
diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Trigger.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Trigger.java
index 22aac95..f42658d 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Trigger.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Trigger.java
@@ -89,6 +89,8 @@ public abstract class Trigger<D extends Device> {
         this.automationId = automationId;
     }
 
+    public abstract <T extends Device> boolean check(T d);
+
     @PreRemove
     public void removeDeviceAndScene() {
         this.setDevice(null);
diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/TriggerRepository.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/TriggerRepository.java
new file mode 100644
index 0000000..a506ce6
--- /dev/null
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/TriggerRepository.java
@@ -0,0 +1,10 @@
+package ch.usi.inf.sa4.sanmarinoes.smarthut.models;
+
+import java.util.List;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.repository.query.Param;
+
+public interface TriggerRepository<T extends Trigger<?>> extends CrudRepository<T, Long> {
+
+    List<T> findAllByDeviceId(@Param("deviceId") long deviceId);
+}
diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/DeviceService.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/DeviceService.java
index c843c42..f248356 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/DeviceService.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/DeviceService.java
@@ -3,6 +3,7 @@ package ch.usi.inf.sa4.sanmarinoes.smarthut.service;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.models.Device;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.models.DeviceRepository;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.models.Trigger;
+import ch.usi.inf.sa4.sanmarinoes.smarthut.models.TriggerRepository;
 import java.util.List;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
@@ -23,9 +24,13 @@ public class DeviceService {
      */
 
     @Autowired DeviceRepository<Device> deviceRepository;
+    @Autowired TriggerRepository<Trigger<? extends Device>> triggerRepository;
 
     public <T extends Device> T save(T device) {
-        List<Trigger<? extends Device>> activated = device.triggeredTriggers();
+
+        final Long deviceId = device.getId();
+
+        List<Trigger<? extends Device>> triggers = triggerRepository.findAllByDeviceId(deviceId);
 
         // map activated -> automations
         // remove duplicates