First you are going to need to locate all 3 parts which there possible locations are listed below.
- Part in the Transfusion Facility:
- Locker left of front door
- Below operation chair
- Cardboard boxes in the backyard
- Part in the Green House:
- Downstairs in front-left corner
- Downstairs kitchen below barrier
- Upstairs on window balcony
- Part located in Generator Room:
- Blue barrels near Beds tunnel
- Yellow buckets in corner
- Yellow rail across from Perk machine
Once all pieces are found you can either build the teleporter in the Greenhouse upstairs table or in the APD Control Room table down in the Bunker Area.