With 2 voltage range settings of 50 V to 4 kV and above, Model PRX-4 provides utility professionals, arborists, and first responders with safety tool that will alert them to potentially dangerous high voltage in work areas. Unit detects voltages around 3 in. at 50 V setting and 10 in. at 4 kV and above. Sealed to resist water penetration in typical outdoor environments, detector uses loud beeper and LED lights to indicate voltage. Battery recharges in 15 minutes to provide full day use.