i suggest you to buy one tv jammer circuit

Compatible with all the latest radio frequency bands, this is the most powerful signal blocking device and can be used over long distances via remote monitoring. Intelligent remote control technology controls the power output. The remote control range is about 30 meters, which will not disturb others.The active power is high, the interference radius is large, only the active downlink will be interfered, and the blocking range of the signal jammer is adjustable. It can effectively cut off the communication between the base station and mobile phones or communication suppression equipment Radio waves. To avoid mechanical ignition and stable high integration caused by the switch, please use a slow start circuit design. 

All electronic products such as smart phones and home appliances emit electromagnetic waves, and various studies have been conducted on the effects on the human body. People are increasingly worried about the harm of electromagnetic waves from smart phones. People are used to using mobile phones near their heads and will continue to be strongly affected by electromagnetic waves. There is a product called smart wifi jammer, which can interfere with electromagnetic waves and reduce the use of smart phones. The product is easy to use, compact and can be delivered separately and can be used in different areas in different environments.

Advantages of fixed jammers: wider interference range, mobile radio signal shielding, various types of wireless communication equipment TV Jammer Circuit cannot communicate, and can be adjusted according to other electronic equipment to prevent radio waves. It will not interfere with the operation of the equipment, so you can Protect where needed and keep wireless signaling equipment away from zones.We might use wireless signal jammers, which have very good performance.Surveillance often occurs in life. Security is very important to us. This is a method to detect good signals and can be used to operate wireless signal detectors. This is one of the most effective methods to detect and monitor the security of business facilities.