New and Improved! High Accuracy: Uses 13 sensors to give accurate readings every time One-step operation: just press the button; when placed on wall LED lights instantly indicate studs Deep Sensing: more sensor pad area than other scanners results in deeper scan Triple Accuracy Technology analyzes and triangulates data from all the sensors for highest accuracy Built-in bubble level makes this 2 tools in 1! The ProSensor 710+ puts the latest stud sensing technology of Franklin sensors to work for you. It instantly finds hidden studs, and now has a built-in bubble level and ruler to make every project easier. No sliding is required. This patented detector analyzes data from 13 sensors and immediately illuminates the LED lights that are in front of a stud. The ProSensor 710+ is faster and more accurate than other products on the market. With the built-in bubble level and ruler, the ProSensor 710+ is three tools in one. Now every project can be a faster and easier.