1. Multi functional: capable of measuring AC/DC voltage, DC current, resistance, diodes, and hFE. 2. Portable design: Small size, can be put into a pocket, easy to carry. 3. Wide application range: It is the perfect tool for laboratories, factories, and homes. 4. Clear reading: Equipped with a large-sized LCD display for easy data reading. 5. More advantages: low battery indicator, automatic polarity display, and overload protection. Explanation: 1. The DT-830B is a handheld mini digital multimeter with high reliability and portability, making it the perfect tool for laboratories, factories, and homes. 2. It can measure AC/DC voltage, DC current, resistance, diodes, and hFE. In addition, it also has advantages such as low battery indicator, automatic polarity display, and overload protection. Specification: Model: DT-830B Color: Yellow, Display Count: 1999 Diode Test: Yes FE Test: Yes Low Battery Indication: Yes Automatic Polarity Display: Yes Overload Protection: Yes DC Voltage: 200mV/2V/20V/1000VAC Voltage: 200V/750VDC Current: 200uA/2000uA/20mA/200mA/10A Resistance: 200/2K/20K/200K/2000K Power: 9V Battery (not included) Packaging information: Package size: 13 x 10 x 3cm/5.1 x 3.9 x 1.2 inches Package weight: 112g/4oz Package list: 1 x Digital multimeter 2 x Test lead pen 1 x User manual