Blocking phone calls - how do i block a phone call

5 Bands Power Adjustable Desktop Jammer Device Block DCS PHS WiFi

2019-02-07

Product Informations This device can be used in any place where the use of mobile phones, GPS and WIFI signals is prohibited. 40 meters of interference can be used for small and medium sized conference rooms and rooms to ensure the safety of meetings and information security Product Features: 1.5 Bands can jamming all cellphone signal, DCS, PHS, WiFi signals. 2.Output power adjustable, your can adjust the jamming range according to your own needs. Precautions: 1.The jammers are customized according to the frequency bands of different countries, please confirm that the purchase country and the actual use country are consistent. Otherwise it can not be used.Please read the jammer function before purchasing. 2.If the low power jammers(such as handheld jammers) to blocker high power signal device(such as high-power WIFI router, Bluetooth audio equipment, etc.), the effect will be poor or even can not jammer. 3.It is forbidden to use while charging. 4.Do not use handheld jammers as desktop jammers. 5.Do not use jammers before connecting the antenna. Technical Specifications Parameter Name Parameter Details Model WF-J5 Jamming frequencies LTE4G/700: 725-775 MHz CDMA800: 850-894 MHz PHS/GSM1900: 1920-1990 MHz 3G: 2110-2170 MHz WiFi 2.4G Ghz: 2400-2500 MHz Jamming radius Up to 40 meters Power supply Power plug, car adapter or built-in battery Total output power 12W Voltage AC: 110/220V, DC 5V Operating temperature -10℃—+55℃ Operating humidity 30—95% Device size 210mm*170mm*60mm Device weight 2800g

blocking phone calls

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