Dòng điện làm việc |
9V |
Tần số làm việc(Frequency) |
52kHz +/- 10% |
Độ nhạy |
Sensitivity: >5cm (for a US quarter) . Low sensitivity: to lower the sensitivity, used in place with interference |
Tính năng |
This detector is applicable to the safe check that the airport, station, wharf, jail, |