diff --git a/internal/domains/sensors/repository.go b/internal/domains/sensors/repository.go
index e57e9cd..6065fb2 100644
--- a/internal/domains/sensors/repository.go
+++ b/internal/domains/sensors/repository.go
@@ -116,7 +116,14 @@ func (i *inMemory) ReadSensorValues(sensorID string, from time.Time, to time.Tim
 }
 
 func (i *inMemory) ReadAllSensors() ([]Sensor, error) {
-	panic("unimplemented")
+	i.mu.Lock()
+	defer i.mu.Unlock()
+
+	sensors := make([]Sensor, 0, len(i.sensors))
+	for _, s := range i.sensors {
+		sensors = append(sensors, *s)
+	}
+	return sensors, nil
 }
 
 type DecoratorRepo struct {
diff --git a/internal/domains/sensors/service.go b/internal/domains/sensors/service.go
index 0044712..365861c 100644
--- a/internal/domains/sensors/service.go
+++ b/internal/domains/sensors/service.go
@@ -48,8 +48,5 @@ func (s *Service) GetValues(sensorID string, from, to time.Time) (Sensor, error)
 }
 
 func (s *Service) ListSensors() ([]Sensor, error) {
-
-	s.repo.ReadAllSensors()
-
-	return []Sensor{}, nil
+	return s.repo.ReadAllSensors()
 }