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.