Safe and reliable product patented from US and Korea on electric fence voltmeter and fault finding devices. Smart Check sets a new standard for rugged, intrinsically safe and easy-to-use digital voltmeter to detect most electric fence problems. □ Features : Patented ultra-high sensitivity design for eliminating ground connection, Patented peak voltage sensing circuits for ensuring accurate measurements, Completely sealed with IP67 waterproof protection for use in harsh environments, Automatic brightness controlled 3 digit display for easy visibility in day and night, Capable of withstanding hazardous 25kV spikes in compliance with IEC60335 electric fence safety standard, Easily recognizable beeper and flashing LED to signal incoming H.V. pulses, Automatic power on/off for extended battery life, Over-range and low battery indication, Polycarbonate and aluminum alloy housing. □ Specifications : Voltage Range 0.2kV to 20.0kV, Operating Temperature 14 to 122°F (-10°C to 50°C), Operating Humidity