Cell phone jammer/ mobile phone blockers

Technical specifications:

1. Effective shielding range: 10-30meters 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 +55c4. Humidity: 30% to 95%