Underground metal detector Thunderbolt II
with High Sensitivity, High quality and competitve price.
Very easy to use
Product functional characteristics:
(1) metal detectors and metal identification function conversion
(2) underground metal and metal mineral exploration
(3) non-ferrous metals and ferrous metal identification
(4) the automatic adjustment functions
(5) manual adjustment to eliminate mineralization reaction
(6) speakers audible devices
(7) battery low power tips
(8) LED luminous function
(9) induction coil disconnected automatic alarm (when connecting cables loose when the automatic alarm)
Product Specifications:
(2) detection method: balance detection / identification detection
(3) main vibration frequency: 4.19MHz
(4) signal frequency: 7.2KHz
(5) Power: DC9V (6 1.5VAA batteries)
(6) Static current: 40MA
(7) low power: 7.2V +0.2 V 7.2V-0.2V