The VDAO40P is a Dual Application Analog Voltage Detector. The VDAO40P Features: Detects 0-40kV Line to Ground (0-69kV Phase to Phase). A Proximity or Direct Contact on Overhead and Underground Systems. Easy to Read Analog Scales. Detect Voltage from the Ground on Bare Overhead Lines when Hand Held. Test Secondary Voltage on Bare or Insulated Cables. The Detector Indicates Line to Ground Values for Nominal or Induced Voltages.