diff --git a/internal/domains/sensors/service.go b/internal/domains/sensors/service.go
index e979520..769aec5 100644
--- a/internal/domains/sensors/service.go
+++ b/internal/domains/sensors/service.go
@@ -37,24 +37,15 @@ func (s *Service) RegisterSensorData(data SensorData) error {
 }
 
 func (s *Service) UpdateSensor(sensor Sensor) error {
-
-	s.repo.UpdateSensor(sensor)
-
-	return nil
+	return s.repo.UpdateSensor(sensor)
 }
 
 func (s *Service) GetSensor(sensorID string) (Sensor, error) {
-
-	s.repo.ReadSensor(sensorID)
-
-	return Sensor{}, nil
+	return s.repo.ReadSensor(sensorID)
 }
 
-func (s *Service) GetValues(sensorID string, from, to time.Time) (Sensor, error) {
-
-	s.repo.ReadSensorValues(sensorID, from, to)
-
-	return Sensor{}, nil
+func (s *Service) GetValues(sensorID string, from, to time.Time) ([]SensorData, error) {
+	return s.repo.ReadSensorValues(sensorID, from, to)
 }
 
 func (s *Service) ListSensors() ([]Sensor, error) {