Description: 1. LCD display with backlight, easy to operate and read 2. NCV induced voltage: when the nearby AC voltage is detected, the red light will be on and the buzzer will sound 3. The 400A large current 35mm large jaw is designed with high precision and can handle cables of various diameters safely and easily 4. Can measure AC/DC voltage, AC current, resistance and test 5. Manually select measurement function and range 6. Data holding function, low power indication, automatic power off. Product parameters: Optional models: ST181, ST182, ST183 DC voltage (ST181, ST182): 400mV~600V AC voltage (ST181, ST182): 4V~600V AC current (ST181, ST182): 40A~400A Capacitance (ST181, ST182): 4nF~4mF Temperature (ST182) - 20 ℃~1000 ℃, 32 ℉~1382 ℉ Hertz/HZ (ST181, ST182): 4hz~4Mhz Zero live wire (ST181, ST182, ): √ NCV(ST181,ST182,):√ On off buzzer (ST181, ST182, ): √ Backlit bright screen (ST181, ST182, ): √ Data retention (ST181, ST182, ): √ Maximum count: (ST181, ST182): 4000 counts, (ST183) 6000 counts Battery: AAA * 2/7 battery Package list: