Product Name:Hidden Smart RFID Door Lock for Kids Bedroom Furniture Locker Read card distance:40mm Warning voltage:4.5V Reaction time:Less than 500ms Certification:CE;FCC; RoHS ;IAF Unlock way:card Battery:6V(4*1.5V AAA batteries) Driven mode:motor/ servo Suitable for:Wooden cabinet door and metal cabinet door Working Type:Independently(Be locked when door is close,unlocked when door is open) Show More