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To reroute Perimeter Station in CONTROL Resonant, reach the subway platform near the road east/southeast of the Field Office, collect three Calibration Units, set them on the three marked yellow squares, then activate the Tuning Device. Walkthroughs report that one unit is behind a door opened with a Power Core charge. The exact object names and steps are guide-reported rather than confirmed by Remedy, so follow the prompts shown in your game if they differ.
Where to find Perimeter Station
From the Field Office, head toward the road east or southeast, in the Central area on the route toward the Patterned Factory. Look for Perimeter Area signage and a subway entrance along the road. Walkthroughs report enemies guarding the approach, so clear them before going downstairs. These directions are landmark-based; the guides do not provide official map coordinates.
What to do at the station
On the platform, locate the Tuning Device and read the nearby calibration note. The detailed walkthroughs describe a three-unit objective. They also warn that there are extra yellow taped squares, so do not assume every marked square is a placement point.
Find the three Calibration Units
- One is in a moldy stretch at track level, behind the stairs you used to enter the platform.
- One is at the top of the opposite staircase.
- One is in a locked room reached using a Power Core charge.
Open the locked room
Before taking the Power Core charge, identify the route to its receiver and the door it will open. The detailed guide describes the transfer as time-sensitive: plan the route first, then carry or transfer the charge and retrieve the unit before the opportunity expires.
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Place the units and activate the device
- Put one unit on the yellow square beside or closest to the Tuning Device.
- Put one on the yellow square at the top of the opposite staircase.
- Put one on the yellow square inside the upstairs shop. This is a different location from the locked room where that unit is found.
- Return to the Tuning Device and activate it after all three units are in place.
If activation does not complete the reroute, compare each unit with these three locations and check the note beside the device.
Why some guides describe a different solution
Two detailed walkthroughs describe three Calibration Units, the Power Core door, three placement squares, and a final interaction with the Tuning Device. A separate, shorter guide describes two switch mechanisms and a platform terminal instead. These accounts do not match, and the available official Remedy pages establish game details rather than this puzzle’s solution. Treat the three-unit route as the better-corroborated walkthrough account, not a first-party-verified procedure. If your current game build shows different object names or prompts, use the in-game note and interaction prompts rather than combining the two accounts.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Names and game context
The guides use the terms “Calibration Unit,” “Power Core,” and “Tuning Device”; use the names displayed in your game if they differ. Remedy announced that CONTROL Resonant would launch worldwide on September 24, 2026 (Remedy’s launch announcement). Its official game page identifies Remedy as developer and publisher and lists PS5, Xbox Series X|S, PC, and Mac, with Mac to follow later in 2026.
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