Power supply:12v Sensitivity:Small coil: 25~30cm, Big coil: 35~40cm Operation Mode:Ground balance mode, discrimination Max Detection:Small coil: 1.5m, Big coil: 3~3.5 m Signal Frequency:437KHz Warranty:2 YEARS Acoustics Frequency:400HZ Net Weight for a Carton:12.4kgs Carton Dimension:680(L) X 340(W) X 845(H) mm Unit Weight::3.2 kgs Show More