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Signal jammer 4G LTE Wifi Signal Blocker Device Built In Antenna Cell Phone Wifi Jammer
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1. This is able to jam 8 different band coverage at range of 1-15 meter.
2. It can block 2G 3G 4G 5G and Wifi signal at the same time
3. Only effect the downlink, the uplink of base station will not be influenced
4. Waterproof and Durable aluminum alloy shell; also endures high temperature
5. Continuous operation of 24hours
6. Perfect jam signals for oil and gas station,school, hospital, prison, conference room, storage
facilities, security service, military, museum, border patrol, customs, etc