1. Metal: 0-85% relative humidity 2. Wood: 0-60% relative humidity 3. Copper conductor: 0-30% RH 4. Working temperature: -10 degrees to 50 degrees 5. Storage temperature range: -20 degrees to 70 degrees 6. Battery: 1x 9V battery (not included in this product) 7. Ferrous metal detection depth: 120mm 8. Non-ferrous metal detection depth: 80mm 9. Copper conductor detection depth: 50mm 10. Wood detection depth: 20mm/38mm 11. Multi-probe Wall Scanner 4 in 1 Wooden Metal Wiring Moisture Detector 2 in 1 12. Can detect hidden metals in walls, ceilings and floors, and can measure the moisture content of various tree species 13. Make the detector simple and convenient to work, making your working time saving and safe 14. One-key conversion of wood/metal/wiring/moisture detection, easy to switch 15. The sensor is located near the marked hole, and the center target is positioned by us to ensure the detection accuracy 16. High-sensitivity metal probe, using new low-power chip technology 17. Applicable to various materials, avoiding cumbersome and easy to use, the screen assigns the probe distance data to accurately detect the position