Omron E4B-Ls70E4 Ultrasonic Sensor $951.29 Omron https://www.ebay.com/itm/124804449544?hash=item1d0eecc508:g:…
Omron Ultra-Sonic Switch Sensor E4B-Ts50F4 $969.75 Omron https://www.ebay.com/itm/174304470297?hash=item28955b2519:g:…