... in parking system. Certifiactions: ISO9001/TS16949/RoHS I. Features of Ultrasonic Sensor EFR-40/48/58RS18A:Functions: transmitter and receiverTerminal: pin.Housing ... : aluminum.Applications: range finders, burglar alarms, automatic doors, remote controls, ultrasonic distance meters.Features: High sensitivity, high reliabiluty, less power consumption ...