Cell Phone Blocker Of Calls

Cell phone jammers do not interfere with the operation of other electronic devices when in use. This is because the electromagnetic signal sent by Cell Phone Blocker Of Calls is completely within the collection working frequency band stipulated by the state, and will only block mobile phone communication. And this signal is always in a relatively static state and will not affect any electronic equipment. Within the cell phone jammer shielding range, although the mobile phone signal is full, it will show no signal when actually using it. At this point the phone is just a small brick. Simply put, a signal jammer is a cell phone jammer that makes radio, mobile phone, Bluetooth, and WiFi signal frequency bands within a certain distance generate noise, so that electronic devices such as mobile phones and radios lose communication signals. It's like you're in a very noisy market, you can't hear what you say, and you can't hear what others say. Listening and speaking are useless.

Schools and test rooms use Cell Phone Blocker Of Calls , and the effective distance is generally within 200 meters. And generally install multiple sets, repeat coverage, strengthen shielding. If you want to hold up a larger "protective umbrella", you need more professional equipment. Usually a signal blocking car is on. CAUTION: The original cell phone jammer was designed to fight crime and serve law enforcement agencies and the military. So in fact, buying signal shielding by yourself is also suspected of being illegal. Cell phone jammers can be serious consequences for criminals.