SPECIFICATION
Sensitivity:
A 25 cent coin (USD): Maximum distance 60mm
Iron pipe of Φ20mm: Maximum distance 100mm
Operating Temperature: -10°C ~ 50°C
Quiescent Operating Current: <8mA
Weight: about 330g (including battery)
Dimensions: 370x78x38mm
Power: 9V battery, 6F22 or equivalent
Operating Frequency: about 17kHz
Tuning: Automatic
Alarm: LED light & audio / vibration