ATF-05Scan for cables and pipes, then drill with cautionRun a detector over the whole fixing area, both directions. Cheap detectors miss deep cables, cables in metal conduit, cables behind metal-backed plasterboard, and anything outside the usual safe zones — and a metal stud frame confuses them further. Treat the wall as if something is there until you prove otherwise. If you have any doubt, isolate the circuit at the consumer unit before drilling, and keep the stopcock in mind if you're near anything that could carry water.