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Heath’s best selling locator is designed to suit all your locating needs in a simple to use two button instrument. The Sure-Lock All Pro consists of an integrated receiver and transmitter which allows you to configure the optimal frequency to best locate all underground utilities quickly and reliably. The continuous depth reading is constantly displayed on the receiver as you near the target conductor. The All Pro offers frequencies ranging from 8.1K to 480 kHz which are optimal for audio, radio and ultra-high frequency targets such as cable and insulated pipe.