Features:
1. Light and beautiful structure, high sensitivity
2. With a small back bag easy to carry, suitable for requiring relatively high places
3. Applications: Gold and silver jewelry, jewelry factory security and the need for a quiet school entrance examination venue mute checks.

Specifications:
1. Sensitivity: A25-cent coin (60mm)
2. Iron pipe-tube: In 20 to 120mm
3. Operating frequency: 13KHz
4. Operating current: Less than 6mA
5. Power supply: 6F22 9V battery
6. Low battery indicated
7. Alert: Audio & LED light
8. Tuning: Automatic
9. Temperature environment: -10 ~50 degree celsius
10. Alarm: Vibration, sound and light alarm, with headphone output (headphones optional)
11. Detection sensitivity: Detection of one yuan coin, the detection distance 6cm and above
12. Current work: Sound and light is less than 20mA, the vibration is less than 70mA
13. Dimension: 420mm x 80mm x 40mm
14. Weight: 430g