Signal jammer growtopia - gps signal blocker jammer diy

Signal jammer growtopia,gps signal blocker jammer diy,Main Features: Jamming Device: Cell Phone,Wifi,GPS Jamming Signal: GPS,Wifi,3G,GSM,CDMA,DCS,PCS Jamming Area: 5 - 40 Meters in diameter Specifications: Jamming Frequency: GPS: 1570-1580MHz WIFI...