Dogtra STB Beeper Collar - Hawk Sound The Dogtra STB Standalone Beeper Collar-Hawk Version gives you durable, reliable beeper functionality in a standalone package. Features a piezoelectric sensor for more accurate motion detection. You choose the mode-Point Only or Run/Point. Dogtra uses microcomputer technology to create a realistic hawk sound. The Dogtra STB Beep is designed as a single body downward facing beeper horn. This eliminates the bulkiness and risk of catching on obstacles such as fences when in the field.
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