Profile: TheJammerWorld is specialized in the development, manufacture and marketing of jamming devices for GPS, cellular & wireless RF communications. Handheld phone jammers are small & light. They can be easily put inside the pocket or hand bag. We have a wide range of portable phone jammers with different power, which can disable all types of cellular signals including the new 3G band. The isolating radius is up to 20 meters. They come with rechargeable Li-Ion battery, an AC charge and a car charger. We offer professional jamming devices with ultra high power. These products are specially designed for prisons, and other sensitive locations such as military & government facilities. The RF detector is a personal use device created in response to the growing concern over health and safety in an environment increasingly bombarded by electromagnetic waves. It is an easy to use hand held device that detects the general relative intensity of microwave radiation.