Powerful dual-band wireless booster and amplifier for in-vehicle, home, or small office use. This silver and black unit is model BRM220-53 and operates on 800MHz and 1900MHz frequencies. It includes a DCH6i DC to DC power supply with an input range of 12-24Volt and an output of 6Volt 3.5A. The device has two antenna ports and LED status indicators for RX and TX signals.