The Pieps DSP Pro is among the most advanced backcountry avalanche beepers available. Its 3-antenna transceiver and digital signal processor can give you precise direction, distance, and depth information for all buried victims within a 60-meter radius. The DSP Pro is also the first beeper with the ability to scan for victims and report how many there are and how far away they are. This Pieps DSP Pro is equipped with a 4th antenna Smart Transmitter that continually scans for the frequencies of surrounding beepers. If another beeper is detected nearby with the same frequency, the Smart transmitter will transmit its pulse out of phase with the nearby beepers so it can be uniquely identified from other beepers, allowing faster extraction of multiple victims buried close together. The Pieps DSP Pro is also compatible with the Pieps iProbe. When a rescuer is uses a Pipes iProbe the transmitter will automatically shut off when the probe comes within 50 cm of the beacon, thus reducing signal noise to other searchers. If the probe is moved away from the beacon, the transmitter automatically turns back on. Use the Pieps DSP Pro along with the Pieps TX600 dog and equipment transmitter so you can search for your furry companion separately from other people, allowing you to find all the people first and search for pets and equipment last.