19-557 CST/berger Magna-Trak 102 Magnetic Locator with Soft Case The 19-557 CST/berger Magna-Trak 102 Magnetic Locator with Soft Case offers a digital bar graph display, in addition to a standard audio tone, to precisely identify the target object, especially in noisy, congested areas. An additional feature in the 19-557 CST/berger Magna-Trak 102 Magnetic Locator with Soft Case is a visual reminder when batteries are low. 19-557 CST/berger Magna-Trak 102 Magnetic Locator with Soft Case features simple, waterproof, push-button membrane pad operation. The Magna-Trak 102 locator also includes a power line indicator feature. The LCD panel visually indicates that a power line is present. Caution: this feature is an aid only and is not intended for locating buried power lines.