Museums, Libraries, Lecture rooms, Prevent students from sms cheating, Theatres, Schools universities, Restaurants, Places of worship, Country clubs, Sporting events, Recording studios, Tv stations, radio stations

Technical specifications:

1. Effective shielding range: 2-10meters radius

2. Isolation bandwidth:  

 CDMA: 869-894MHz
                                        GSM: 925-960 MHZ
                                        DCS:1805-1880MHZ 

                                        WCDMA:2110-2170MHZ

                                        PHS:1900-1925MHZ

                                        PCS:1930-1990MHZ

3. Operation temperature: -40c to +55c
4. Humidity: 30% to 95%

5. work time:2-2.5hours