Works best for single user with the Universal inside patch antenna attaches to any device (cellphone, laptop, aircard) and boosts the signal. Can provide wireless boosting to up to 5 other devices up to 2-3 feet away from the patch antenna. This model requires just 6' separation between the outside and inside antennas. A complete vehicle set with everything you need to start boosting signal anywhere without having any wires attached to the device or phone. For very compact areas like truck cabins, RVs, cars and in house on desktop or kitchen tables. Comes with inside patch antenna, outside magnetic mount antenna, DC cigarette lighter cord and AC power supply. No need to attach wires directly to your phone! Just place the patch antenna close to the phone or phones and it sends a signal wireless to you Multiple phones will be boosted within the range. Works for Bell, Telus, Rogers, Sasktel, MTS, and most other networks in Canada, USA and Mexico. Comes with Car and Home power adapter to use in vehicle or in home. Cellphone-Mate SureCall CM2000-WL-40 Dual-band Wireless Amplifier. The Cellphone-Mate SureCall CM2000-WL-40 (V3.0) is Cellphone-Mate's 3rd generation mobile cell phone booster. It is a dual-band amplifier that works with all 800/1900MHz GSM, CDMA and TDMA carriers (Bell, Telus, Rogers, etc.) except Mike/Nextel/iDEN. This dual-band wireless vehicle cell signal booster has been refined over the past several years. No physical connection is required to your cell phone or datacard. Only booster with a 24 month warranty. Product Description Cellphone-Mates SureCall CM2000-WL-40 has 3 Watts of power to communicate with the cell tower and significantly improves both voice and data signal quality, which greatly reduces the chance of dropped calls. The 40/45dB gain amplifier will broadcast about 2-3 foot radius from the interior antenna. The booster can easily be transferred between vehicles. This complete system includes 3 watt dual-band 800/1900MHz dual-band amplifier, vehicle power supply, wall plug power supply and interior patch broadcast antenna. Interior Antenna. Needs to be close to the phone inside the car. The slender patch antenna can easily be mounted on the side of the seat or console. It should be mounted in a vertical position and not against any type of metal. Outside antenna just stays attached to the outside roof of the car and can be removed anytime. The thin wire easily passes out the window of the car and allows the window to be closed while driving.