The VDAO40P is an analog voltage detector designed for use in high-voltage electrical systems. It provides both proximity and direct contact voltage detection for overhead and underground applications, making it versatile for utility, industrial, and field service work. Its easy-to-read analog scale and rugged construction suit it for demanding environments where accurate and reliable voltage detection is critical. Includes: VDAO40P Analog Voltage Detector main unit Straight probe Hook probe Universal/grip-all adapter User manual Padded carrying case for storage and transport One-year warranty documentation Features: Detects voltages from 0 to 40kV line-to-ground (0–69kV phase-to-phase), supporting a wide range of distribution and sub-transmission systems. Dual application: usable in both proximity and direct contact modes for overhead and underground systems, increasing jobsite flexibility. Easy-to-read analog display allows for quick determination of voltage presence and approximate value even under challenging conditions. Capable of detecting voltage from the ground on bare overhead lines when hand-held, enhancing operator safety. Can test secondary voltage on bare or insulated cables, supporting routine maintenance and troubleshooting tasks. 5-position selector switch calibrated for height above ground to compensate for capacitive coupling effects, ensuring accurate readings in different working configurations. Shielded design to minimize stray-field interference, improving measurement reliability. Overload protection up to 500kV for enhanced operator safety and instrument durability. Rugged, water-resistant construction to withstand harsh field environments. Specifications: Voltage detection range: 0 to 40kV line-to-ground; 0 to 69kV phase-to-phase Proximity or direct contact modes 5-position selector switch for capacitance compensation Designed for use on both overhead and underground (URD) systems Overload protection: up to 500kV Water-resistant enclosure Analog display Shielded for minimized stray field interference Passive operation; battery required only for test position (applies broadly to Bierer analog detector family) One-year warranty on parts and labor Collections: This product is available in the following collections: Hand Tools Related Products: Bierer Analog Phasing Voltmeter and Voltage Detector 300 Volt - 25kV Bierer Analog Phasing Voltmeter and Voltage Detector 300 Volt - 35kV Bierer Digital Voltage Detector 1kV - 999kV View our Return Policy