Feature and Function: The product with patent number of 02247306.8 is researched and developed by the technicians of our company. Appearing with the disturbance of the mobile phones signal in public social places, it could effectively control the normal use of mobile phones and shielding microwave signal between transmitters and cell phones. Comparing with similar products, our product has the excellence of low price, more stable performance and broader range of shielding. Using occasions include examination room, gas stations, churches, courts, libraries, classrooms, conference centers, theaters, hospitals and other places.

Specification:
1. It can restrict the mobile phone signal which is 40m-100m in diameter and 200 meters far from the transmitting station.
2. It only shields mobile phone signals, but has no influence on other electronic equipments, audio equipments and human bodies.
3. It is easily installed and the connector plugs is the only one what is needed to install.
4. It saves the electric energy.
5. Working frequencies: 860-885MHz, 930-960MHz, and 1.800-1.99 GHz.
6. Working frequency bands: CDMA800, GSM900, DCS1800, and PCS1900.