The Proximity Detector is an UPSILON Mercenary equipment device used in the Tom Clancy's Splinter Cell: Double Agent (Version 1) multiplayer mode Spies vs Mercs. The Proximity Detector is a passive ability and is always active, it let's a Mercenary know if a Spy is near their position and their approximate distance.
The Proximity Detector is a constant detection device used to notify the Mercenary about nearby Spies that may be in the immediate area. The Detector visually displays distance between the user and the target as well as giving off a small pulsing sound that increases tempo between the target. The visual display appears on the bottom section of the Mercenaries heads-up display, appearing as a small circle with 3 different sections appearing inside of it. The circles around the center circle fill up depending on the distance, with the inner-most circles representing the Mercenary's position.
- Spies possess the 'Jammer' as one of their gadgets during SvM. The Jammer can be used to give a false signal that can be used to confuse the Mercenary's Proximity Detector.