What to check before buying
- Check the explicitly supported targets: timber, ferrous metal, non-ferrous metal and live cables may differ.
- Compare stated detection depths separately for each material and the wall construction described by the manufacturer.
- Read calibration requirements and conditions that can affect readings before relying on a product’s advertised range.
- Confirm battery requirements, display and alert types, and the exact model or generation supplied.
Reference & scope
This page is a selection checklist for a product type. The manufacturer instructions and exact retailer listing determine suitability, included accessories and available variants.