9V Powered Entry Level Metal Detector

A purpose-built entry-level metal detector powered solely by one 9 V (6F22) battery — no rechargeable packs or proprietary chargers needed. Operates within 7.2–9.6 V range, consuming 10 mA at rest and up to 70 mA under load. Fixed 5.0 kHz frequency provides predictable performance across soil types. Detects US 25-cent coins at up to 130 mm depth. Feedback is delivered via mechanical pointer only — no digital display, no backlight, no firmware. The search coil is fully waterproof, allowing safe use in damp conditions including wet grass, shallow streams and beach surf lines. Ergonomically shaped for smaller hands and light enough for sustained use without fatigue. The sensitivity dial enables real-time adaptation: reduce setting near reinforced concrete or buried utilities to limit false alarms; increase for subtle targets like thin chains or foil fragments in clean soil. Volume control accommodates indoor classroom use or loud outdoor environments. Detection triggers both tone and pointer movement. Ideal for identifying common metals — iron, steel, aluminium, copper, brass, silver and gold — supporting hobbyist exploration and curriculum-aligned science topics (conductivity, magnetism, material classification). No setup, no downloads, no subscriptions. Battery compartment opens without tools. Includes clear safety guidance: remove battery if unused for >2 weeks to prevent leakage. Not compatible with alkaline battery substitutes unless specified as 9 V 6F22 compliant.