Detailed Product Description A Special Price of cell phone jammer / It is get low hot. Technical specifications: 1. Effective shielding range: 10-25 meters 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. Power adapter: Input: 100 to 240V AC Output: DC4V 240*230*68 1.2kg