Note: #1 MS5908A: The input voltage is 110V, US plug #2 MS5908C:The input voltage is 220V, EU plug Features: TRMS measuring AC Voltage Artificial load 12A,15A, 20A measuring wire drop(MS5908A)/Artificial load 5A,8A,10A measuring wire drop(MS5908C) Measuring phase voltage, neutral wire, voltage to earth, peak voltage, frequency Measuring phase(live wire), neutral wire, earth wire conductor impedance Identifying 3-wire socket connection mode(neutral for left and live for right,having earth wire or not) Test the reliability of residual current device(RCD) and response action time Test the reliability of GFCI action and response action time Backlight function and data hold function Specification: Type(Optional): MS5908A(110V, US plug), MS5908C(220V, EU plug) Wire Voltage: 85.0~265.0V: 0.1V ±(1.0%+0.2V) Peak voltage: 121.0~374.0: 0.1V ±(1.0%+0.2V) Frequency: 45.0~65.0Hz: 0.1Hz ±(1.0%+0.2Hz) Voltage Drop: 0.1%~99.9%: 0.1% ±(2.5%+0.2%) Voltage Loaded: 10.0~265.0V: 0.1V ±(2.5%+0.2V) Voltage to earth of neutral wire:0.0!10.0V: 0.1V ±(2.5%+0.2%) Impedance for live wire, neutral wire and earth wire: 0.00~3.00Ω: 0.01Ω ±(2.5%+0.02Ω) RCD Triggering Time: 1ms~6.500s: 1ms ±(1.0%+2ms) RCD Triggering Current: 30mA~37mA: 0.1mA ±(1.0%+0.2mA) GFCI Triggering timer: 1ms~6.500s: 1ms ±(1.0%+2ms) GFCI Triggering Current: 6mA~9mA: 0.1mA ±(1.0%+0.2mA) Power Supply: 1.5AAA * 6 (not included) Color: green Size: 19.5*7.5*3.3cm/7.7*3*1.3in Weight: Approx.642g~655g/22.6oz~23.1oz Package List: 1 * MS5908A/ MS5908C TRMS AC Voltag Circuit Analyzer 1 * Power Cable 1 * English Manual 1 * Carrying Box