Check for live voltage without touching the conductor!"The Volt Detective is on the best electrical tools that I could have purchased. I am a maintenance man at a large home owners development where I am responsible for 70 street lights. Using this tool for diagnosing the electrical problems has saved me hours of work, made the job safer and less frustration and you can't beat the price. Thanks so much, Ted C."-listening on WMMB 1240 AM/WMMV 1350 AM in Melbourne, FL