Installation guide:

Type: Regular

Equivalent input noise level: ≤29dB ± 3dB

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Folding Handheld Detector, Gold and Silver Jewelry Apparatus Kids' Accessories Installation guide:Product Details: Working power supply: 9 (V) Alarm mode: sound Measuring range: 3 5 cm Scope of application: airports, stations, docks, showrooms, etc. Type: Handheld Detector Feature: Function conversion of metal detection and metal identification Underground metal and metal mineral detection Identification of non ferrous and ferrous metals Automatic adjustment function Manual adjustment to eliminate mineralization reaction Speaker beeps Low battery