This part is a kind of semiconductor called 945-xxx-xx-00x.
Function of this product has Ultrasonic Sensors.
Manufacturers : ETC
Image and pinout :

Some of the text within the PDF file :
Ultrasonic Sensors Compact 18 mm Diameter Digital FEATURES ɀ Sensing distance up to 1,5 meters ɀ 18 mm diameter housing ORDER GUIDE Sensor Package Style 18 mm dia. PBTB Plastic Sensing Range* mm (in.) 200 - 1500 (7.87 - 59.05) Digital Output PNP, N.O. NPN, N.O. PNP, N.O. NPN, N.O. 150 - 700 (5.9 - 27.5) PNP, N.O. NPN, N.O. PNP, N.O. NPN, N.O. * Standard target is 120 mm square of mild steel perpendicular to ultrasonic beam. 940 Series ɀ High power transducer ɀ Microprocessor controlled ɀ IP 67 sealing ɀ High output current Termination Cable Cable Connector cable Connector cable Cable Cable Connector cable Connector cable Catalog Listing 940-F4Y-2D-001-180E 940-F4Y-2D-002-180E 940-F4X-2D-001-180E 940-F4X-2D-002-180E 940-F4Y-2D-001-300E 940-F4Y-2D-002-300E 940-F4X-2D-001-300E 940-F [ ... ]
945-xxx-xx-00x PDF Datasheet Download
