The Honeywell 6 Point Helmet Mount Voltage Sensor is a highly-accurate high-voltage sensor. The light-weight, compact, designed 6 Point Helmet Mount Voltage Sensor can be easily attached to any hard hat. The Helmet Mount Voltage Sensor allows users to detect high-voltage sources without using their hands, allowing more mobility during work. When the user is in the vicinity of any high-voltage source, the Voltage Sensor emits a sharp noise to warn surrounding workers. The Honeywell 6 Point Helmet Mount Voltage Sensor is ideal for workers dealing with electrical equipment and high-voltage equipment installations. The 6 Point Helmet Mount Voltage Sensor has an immediate response to voltage discharges. The Helmet Mount Voltage Sensor operates on batteries. Product Specifications Temperature: 0 - 55 C Colour: White and Black Indicator: Led Indicator and alarm Adjustment: Pin lock Power Source: 11KV Weight: 140 grams Battery: 2 X 1.5V AAA Brand: Honeywell