Review on Enhance Detection Accuracy with Klein Tools ET140 Non Destructive Detection by Knate Scarpelli

Cannot speak with accuracy. Otherwise: OPERATION: Easy to use. No instructions required. No need to enter wood types, just select hardwood or softwood (or drywall or masonry). BATTERY: Requires a screwdriver to open the battery cover. This is undue annoyance. Battery covers should always be opened without a screwdriver unless it is a toy for young children who could swallow the battery. PACKAGING: It uses hard plastic bubbles that cannot be recovered and are painful to open. For many years there has been a trend towards packaging without disappointment. Small is behind the times.