In an emergency, only one thing counts: unconditional hands-on reliability! The Pieps DSP has quickly become the preferred User-Friendly beacon on the market for backcountry skiers and rescue professionals. To live up to this challenge, PIEPS counts on the collaboration with professional mountain guides, mountain rescure teams, skiing instructors and scientists for its product development. This know-how and more than 30 years of experience in the development and manufacture of avalanche search beacons is surety for the quality of our premium Alpine performance products. The DSP can be deactivated temporarily by the iProbe and the searcher can focus on the next strongest signal. PIEPS provides the first truly 100% perfect safety solution for multiple avalanche burials. In open terrain, off the secured slope, never be without your PIEPS!An automated self-check ritual that tests all major functions each time you power up the unit. The DSP is the perfect rescue accessory for professional mountain guides, mountain rescue teams, ski instructors, and anyone else who makes a living on the mountain. 3 Antenna System That Pinpoints Precise LocationSCAN BUTTONMARK BUTTONSMART TRANSMITTER (Great for Skiers & Rescue teams)SOFTWARE UPGRADABLEVERSION 6.2 SOFTWARE UPDATEDimensions 2.95 x 4.5 x 1.06 inchesWeight 0.43 poundsPower 3 AAA Batteries (included), 1.5 volts, alkalineBatt