The AV-40 is a non-contact voltage indicator with an audible and visual alarm to indicate the presence of voltage, with an operating range from capacitive test point /secondary voltage to 40kV (line to ground). Activation threshold meets ASTM requirements. Can be used as a stand-alone Voltage Detector without second probe. Non-Contact Audible Visual detector for Underground & Overhead Applications Calibrated threshold is Minimum Approach Distance for each Overhead Setting Meter Assembly is over voltage protected Incidental direct contact will not damage the unit Watertight construction Fully repairable for a low cost of $75 after 1-year free replacement warranty expires Super bright LEDs and ultra loud horn guarantees operator seeing & hearing unit Built in Test position is standard for all units May also be used as a direct contact voltage detector Standard Universal/Grip All Adapter is included with every unit Each kit includes: Instruction manual Small bag