1) Sensitivity: A25-cent coin (60mm)

2) Iron pipe-tube in í20 to 120mm

3) Operating frequency: 35KHz

4) Operating current: < 8mA

5) Power supply: 6F22 9V battery

6) Low battery indicated

7) Alert: Audio & LED light

8) Tuning: Automatic

9) Temperature environment: -10 ~50∩

10) Dimension: 420 x 80 x 40mm

11) Weight: 450g