Features:TRMS measuring AC VoltageArtificial load 12A，15A，20A measuring line dropMeasuring phase voltage，neutral line(zero line)， voltage to earth，peak voltage，frequencyMeasuring phase(live line)，neutral line(zero line)，earth line conductor impedenceIdentifying 3-wire socket connection mode(zero for left and live for right，having earth line or not)Test the realibility of residual current device(RCD) and response actyion timeTest the reliability of GFCI action and response action timeBaclklight function and data hold functionSpecifications:Line 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 zero line:0.0!10.0V: 0.1V ÷(2.5%+0.2%)Impedance for live line，zero line and earth line: 0.00~3.00: 0.01 ÷(2.5%+0.02)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)General Characteristics:Power Supply: 1.5AAA * 6 (not included)Package Size: 25.3 * 14 * 5.5cm / 10 * 5.5 * 2.2inPackage Weight: 620g / 1.4lbNOTE: The input voltage is 110V， US socket.Package List:1 * MASTECH MS5908A TRMS AC Voltag Circuit Analyzer1 * US Socket1 * English Manual1 * Carrying Box"
