The VDAH300 is a wide range transmission and distribution voltage detector that comes standard with a hold feature and backlight. VDAH300 Features: 2.4kV – 300kV Line to Ground (4kV – 500kV Phase to Phase) Voltage Range. For Overhead and URD Applications. Meter is Passive, Battery is Only Required for the Test Position. A Linear/Logarithmic Scale for Better Resolution from Distribution to Transmission Systems. Meter is designed to Read Approximate Nominal or Induced Voltage Line to Ground.