Specifications: jyt-cvu770 Style a : Cover interface standards: Cdma 800: 850 to 960MHz Gsm 1800: 1,805 to 1,880MHz (dcs) Gsm 1900: 1,920 to 1,990MHz (pcs) 3g: 2,110 to 2,170MHz Gps:1570-1580MHz Wifi2.4g:2400-2500MHz Vhf:135-174MHz Uhf:400-470MHz jyt-clj 770 Style b : Cover interface standards: Cdma 800: 850 to 960MHz Gsm 1800: 1,805 to 1,880MHz (dcs) Gsm 1900: 1,920 to 1,990MHz (pcs) 3g: 2,110 to 2,170MHz Lojack : 173.07MHz Wifi2.4g: 2400-2500MHz Vhf:135-174MHz Uhf:400-470MHz jyt-crf770 Style c : Cover interface standards: Cdma 800: 850 to 960MHz Gsm 1800: 1,805 to 1,880MHz (dcs) Gsm 1900: 1,920 to 1,990MHz (pcs) 3g: 2,110 to 2,170MHz Gps:1570-1580MHz Wifi2.4g:2400-2500MHz -315:315mhz -433:433mhz jyt-cnf770 Style d : Cover interface standards: Cdma 800: 850 to 960MHz Gsm 1800: 1,805 to 1,880MHz (dcs) Gsm 1900: 1,920 to 1,990MHz (pcs) 3g: 2,110 to 2,170MHz Gps:1570-1580MHz Wifi2.4g:2400-2500MHz 4g wimax:2345-2400MHz or 2620-2690 4g lte:725-770mhz You can select eight of above frequency bands you need in a jammer Odm and oem orders are welcome Total output power: 20 w Jamming range: up to 70m, the jamming radius still depends on the strength signal in given area External Omni-directional antennas all the tx frequency covered down link only Power supply: 50 to 60Hz, 100 to 240v ac With ac adapter (ac100-240v-dc12v), Dimension: 370x 140 x 51mm Full set weight: 4.0kg Advantages: Good cooling system with cooling fan inside Work non-stopped Stable capability Could be used in car directly,With car charger (Option) . Application Area: it can be applied at meeting rooms, conference rooms, museums, galleries, theatres, concert halls, churches, temples, restaurants, classrooms, training centers, factories, banks, trains, bus and more For some locations of special purpose such as hospitals, gas stations and more, Please do field test first to make sure no interference happened to the normal operation of their equipment and instrument Warranty: One year from delivery date