Supports multiple users simultaneouslyincreases voice and data transmissionBi-Directional Amplifier (BDA) systems captures and amplifies the cell signal to extend a Cell ZoneImproves coverage up to 12,000 sq. ft. and enhances all cell phone functions Designed for CEL 800MHz, PCS 1900MHz or Dual Band (800MHz and 1900MHz bands)except Nextel IDEN frequency No cradle or connections to the user\'s cell phoneDecreases dropped or missed calls and protects the carrier network using patent-pending technologyPCS band: 75dB system gain; CEL band:70dB system gainIncludes power supply, high-gain signal and base unit antennas, signal combiner and mounting hardwareLength: 20.00Width: 14.25Height: 14.25