Description Designed for in home repair and electrical testing applications, the AM-420 Digital Multimeter accurately measures voltage in receptacles, switches, extension cords and light fixtures. Use the continuity function to easily troubleshoot light bulbs and fuses. This compact tools is designed for in-home repair and electrical testing applications, including measuring presence of voltage in electrical sockets, extension cords, batteries and other electrical circuits up to 250 V. It is a must have tool for residential projects including installation, troubleshooting or repair of light fixtures, fans or appliances. DC ranges of voltage and current are included to help with automotive diagnostics of electrical systems. The battery test feature checks the amount of charge remaining in standard 1.5 V and 9 V batteries. Feature AM-420 Best Accuracy AC Voltage 200.0 / 300 V /-(1.5% rdg 4 LSD) @ 45 Hz to 400 Hz, 2 V to 200 V DC Voltage 200 mV 2.000 / 20.00 / 200.0 / 250 V /-(1.2% rdg 2 LSD) @ 200 mV to 200 V DC Current 200.0 µA 2.000 / 20.00 / 200.0 mA /-(1.2% rdg 5 LSD) @ 200 µA to 20 mA Resistance 200.0 Ω 2.000 / 20.00 / 200.0 kΩ /-(1.5% rdg 5 LSD) @ 200 Ω to 200 kΩ Continuity • Diode Test • Battery test 1.5 V, 9 V /-(5.0% rdg 1 LSD) Data Hold •   General Specifications Maximum display 1999, updates 2 to 3/sec Range Manual-ranging Operating temperature 32°F to 104°F (0°C to 40°C) Relative humidity 32°F to 86°F (0°C to 30°C) ≤75%; 86°F to 104°F ( 30°C to 40°C) ≤50% Pollution degree 2 Operating altitude ≤ 6561 ft (2000 m) Storage temperature 14°F to 122°F (-10°C to 50°C) Electromagnetic compatibility In an RF filed of 1V/m = Specified accuracy ± 5%. RF field > 1V/m is not specified. Over-range indication ” 1 “, “-1” or maximum display reading Battery One 9V alkaline battery (6LF22, 6LR61, MN1604) or equivalent Battery life Alkaline: 100 hours typical Low battery indication Overvoltage Category CAT II 250V Safety Compliance IEC 61010-1, UL 61010-1 2nd Ed. and CAN/CSA C22.2 No. 61010-1-04 Update No.1:2008 EMC Compliance Conforms to IEC 61326-1