diff --git a/internal/domains/sensors/service.go b/internal/domains/sensors/service.go
index a8edb14..3f29d2a 100644
--- a/internal/domains/sensors/service.go
+++ b/internal/domains/sensors/service.go
@@ -1,5 +1,7 @@
 package sensors
 
+import "time"
+
 type Service struct {
 	repo Repository
 }
@@ -9,3 +11,23 @@ func NewService(repo Repository) *Service {
 		repo: repo,
 	}
 }
+
+func (s *Service) RegisterSensor(sensor Sensor) error {
+	return nil
+}
+
+func (s *Service) UpdateSensor(sensor Sensor) error {
+	return nil
+}
+
+func (s *Service) GetSensor(sensorID string) (Sensor, error) {
+	return Sensor{}, nil
+}
+
+func (s *Service) GetValues(sensorID string, from, to time.Time) (Sensor, error) {
+	return Sensor{}, nil
+}
+
+func (s *Service) ListSensors() ([]Sensor, error) {
+	return []Sensor{}, nil
+}