Doesn’t the battery in the coil cause interference when detecting?

[FORUM XP]

No. As the battery is sealed, fixed and very small, it does not affect detection. In conventional metal detectors it is mainly the cable or connectors which, when they move, cause interference by sending static signals back to the circuit.
In DEUS, the signals are digitised at the coil terminals, so this also eliminates any static that cables or control box electronics might receive. Once the signal has been digitised in the head, it can no longer be affected by electromagnetic interference like conventional detectors.