4 Can be found behind a bed on the bottom shelf in Roy Phillip's ghoul Hideout.
1 Can be found in Vault 87 on the Fire Alarm Panel inside the Test Labs
3 Can be found in the RobCo Facility inside the room to your left (just after entering from the wasteland).
Fallout: New Vegas[]
Two can be found at the start of the game in Goodsprings. One is on a shelf, in a trailer behind the Goodsprings General Store. The other sometimes appears inside a Stash toolbox located on a pickup truck bed, behind the southeastern most Goodsprings Home. One can also sometimes appear inside a toolbox in the general store. another can sometimes be found in a toolbox or metal box in the school house.
Found at Cerulean robotics just to the north of The Strip North Gate.
Alternatively, in Fallout: New Vegas, five sensor modules can also be found in Novac on shelves outside the gas station. They are marked as owned, and must be stolen.
Several more can be found in the Lone Wolf Radio caravan. There are two on a shelf near the pile of tin cans, and one more can be found in the metal box to the left of the bed.
Can sometimes be found in sheriff's house in Primm in a toolbox.
One may be found in a stash toolbox inside of an overturned truck trailer (the last one on the left as you approach the two giant statues at the entrance to Mojave Outpost).
Two can be found inside the Vault 21 gift shop, on a shelf to the right of the entrance.
