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2019 EMP Jammer with voltage changeable with voltage tester and multi frequency

here to buy 

Power supply voltage: 12V
Working voltage: 28~45V can changeable
Working mode: Fixed frequency and Flash Frequency
Antenna mode: built-in + enhanced external [removable]
Instrument color: Black
Instrument size: 85X50X21MM
Instrument power: 20W
Power switch: double switch
Heat radiation mode: internal heat sink
Charging time:45 Mins

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