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Found three proximity v-40 3d models.

free
grabcad
Murata 0.2 → 4 m Barrel Ultrasonic Proximity Sensor, PCB
free
thingiverse
Prusa i3 Bowden extruder with inductive proximity sensor auto level REMIX!
free
3dwarehouse
Sharp IR (infra-red) Sensor - GP2Y0A21YK0F