diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/DeviceRepository.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/DeviceRepository.java
new file mode 100644
index 0000000..fdae66e
--- /dev/null
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/DeviceRepository.java
@@ -0,0 +1,13 @@
+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;
+
+/**
+ * DeviceRepository acts as a superclass for the other repositories so to mirror in the database the
+ * class inheritance present among the various devices.
+ */
+public interface DeviceRepository<T extends Device> extends CrudRepository<T, Long> {
+    List<T> findByRoomId(@Param("roomId") long roomId);
+}