The Whistler 3500 is a remote radar detector that is designed to stay out of sight. This high performance radar detector includes an antenna that mounts under the hood, and a control panel that can be mounted anywhere inside your car! One key feature of the Whistler DE-3500 is it's wireless capabilities. The radar antenna communicates with the control panel using your vehicle's existing 12 volt power system. This eliminates the need to run wires through your fire wall, simplifying the installation process! This model detects POP mode radar, and includes 3 city modes to reduce false alerts. It includes a tri-directional alpha-numeric display, and offers voice alerts with an optional accessory. The Whistler 3500 will also display the outside temperature and your battery voltage. It also features a three year warranty from the manufacturer!!