Vehicle Signal Jammer Up To 1000m For Waterproof WiFi GPS Cell Phone Industrial-grade signal jammers built for militar y, prison, law-enforcement, bomb disposal and high-level security assignments. Defend VIP and militar y convoys against roadside RCIED strikes and block GPS vehicle tracking. Create a safe RF-neutral zone for EOD teams to disable remote-triggered explosives. Secure armed forces raids by cutting criminal wireless communications and eliminating mission leaks.