Autonics SCM-US Cable, USB to Serial Converter (SCM-38I/SCM-US48I)Built-in Protection Circuit $154.00 Select
Takex US-T04AN Ultrasonic Sensor, Thru Beam, 24VDC, 20-60mm Detecting Distance, Analog, w/Cable, (Optional: SUS nut: US-N2) $815.92 Select