1. The signal generator is small in size, has many functions, easy to operate and easy to carry.2. The key layout is reasonable, all functions have independent corresponding keys, easy to operate.3. Built-in battery, low power consumption, long standby time.Features:LCD Backlight Display.Double insulation protection is safer.Auto Range.Measurement mode:double-integral style A/D transform.Sample rate:3 times per second.Over range indication:OL.Low voltage indication / Data retention / Automatic shutdown.Resistance capacitance frequency file high voltage 550V protectio.10A large current measurement, mA level small current measurement.Polarity identification.Power: 1.5V (AAA) * 2(Not Included)Size: 139*83*36mmWeight: 160gADM66 Specifications:Max Dispaly: 6000 counts.Current: 600uA/6000uA/60mA/600mA (1.0%+5); 10A (2.0%+5)AC Current: 600uA/6000uA/60mA/600mA (1.5%+5); 10A (3.0%+5)Voltage: 60mV/600mV (1.0%+3); 6V/60V/600V (0.5%+5)AC Voltage: 60mV/600mV (1.2%+3); 6V/60V (1.2%+5); 600V (1.5%+5)Resistance: 600/6k/60k/600k/6M (0.8%+5); 60M (1.5%+5)Capacitance: 9.999nF/99.99nF/999.9nF/9.999uF/99.99uF/999.9uF (3.0%+3); 9.999mF/99.99mF (4.0%+5)Frequency(V/Current): 60Hz/600Hz/6kHz/10kHz (2.0%+5)Frequency(Hz): 99Hz/999.9Hz/9.999kHz/99.99kHz/999.9kHz/9.999MHz/99.99M (2.0%+5)Temperature: -30-0(-22-32) (5.0%+3); 0-400(32-752) (1.0%+3); 400-1000(752-1832) (2.0%+2)