Continuity, Diodes, Transistor hFE and so on. Portable, and easy to use. It can service well in fielf of maintenance of auto, electrical engineering and teachig lab, ect. Specifications: Model Number: RM111 Operating Temperature: 0 - 40 Operating Humidity: 75%RH Storage Condition: -20~60 Storage Humidity: 80%RH Operating Mode: Auto/Manual Ranging Temperature Range:? -20~1000 C/-4F-1832F Capacitance Range: 9.99nF/99.99nF/999.9nF/9.99uF/99.99uF/999.9uF/9.999MF Voltage Range: 999.9mV/9.999V/99.99V/999.9V Current Range:60mA/600mA/10A Resistance Range: 99.99Ω/999.9Ω/9.999kΩ/99.99kΩ/999.9KΩ/999.9MΩ Frequency: 99.99Hz/999.9Hz/9.999KHz/99.99KHz/999.9KHz/9.999MHz DC/AC Voltage(mV): 9.999mV/99.99mV DC/AC Voltage(V): 999.9mV/9.999V/99.99V/750ACV(999.9DCV) DC/AC Current (mA&A): 999.9mA/9.999A DC/AC Current (uA): 99.99A/999.9A Diode Test: Yes Continuity: Yes Duty Cycle: 1%-99% Sample Rate: 3 times per second Power: 2 * 1.5V AAA batteries(Not Included) Item weight: 113.3g / 3.99oz Package weight: 261g / 9.20oz Item size: 125 * 65? * 22mm / 4.92 * 2.56 * 0.87in Package size: 160 * 100 * 45mm / 6.30 * 3.94 * 1.77in Note: 1. Do NOT exceed the "maximum value" indicated in the Specification; 2. Do NOT input voltage at the Current Mode, the Resistance Mode, the Diode Mode, the Continuity Mode, or the Temperature Mode; 3. Do NOT use the product when