Technical Parameters:                          

• Alarm Method: single buzzer and vibration
• Sensitivity Level: high and low, two options
• Battery Type: 9V alkaline battery or rechargeable nickel-hydrogen battery
• Working Hours: under the 10% alarm, alkaline battery 40 hours , rechargeable nickel-hydrogen battery 14 hours
• Working Frequency: 25KHZ
• Size:400mm x 79mm x 30mm
• Weight:248g
• Detecting Accuracy: pin 30-60mm, 64-type pistol 150mm, 6” dagger 160mm,Ф20mm steel ball 90mm