1、[Double Protection] With shockproof protective cover design, double protection, safe and durable, so you can measure with confidence. 2、[With A Bracket] The back of the digital multimeter is designed with a bracket, which is convenient to place, easy to observe data, and meet your various needs 3、[Backlight Display] With large screen high definition backlight display, unit symbols display, clear numbers without ghosting, easy to operate even in dark environments. 4、[High Accuracy] The back of the protective case has a test lead storage design, which is easy to carry the test lead, convenient for measurement, and accurate measurement results. 5、[Widely Application] Digital multimeter can measure AC and DC voltage, AC and DC current, resistance, capacitance, inductance, diode, triode on off test, temperature and frequency. Item Type: Digital Multimeter Model: LD9807B Material: ABS Battery: 2 x AAA 1.5V (Battery Not Included) 2. Resistance: 400.0Ω/4.000kΩ/40.00kΩ/400.0kΩ/4.000MΩ/40.00MΩ 3. Capacitor: 50nF/500nF/5uF/50uF/100uF 4. Current: DC Current: 400uA/4000uA DC Current: 40mA/400mA DC Current: 4A/10A AC Current: 400uA/4000uA AC Current: 40mA/400mA AC Current: 4A/10A How to Use: Normal Operation: Reading Hold Mode/Backlight Control Keys: The reading hold mode can keep the current reading on the display. Activating the reading hold function in the automatic range mode will switch the meter to the manual measurement mode, but the original range will remain unchanged. The reading hold mode can be exited by changing the measurement function gear, pressing the RANGE key or pressing the HOLD key again. To enter and exit reading hold mode: 1. Press the "HOLD" key once, the reading will be held and the "DATA‑H" symbols will be displayed on the LCD at the same time. 2. Press the "HOLD" key again to restore the meter to the normal measurement state. (There is no "HOLD" function during frequency measurement.) 3. Backlight display: In "HOLD" mode, press the "HOLD" key for more than 2 seconds to turn on the backlight, and when the backlight is on, press the "HOLD" key for more than 2 seconds, the backlight is turned off (only LD9807B, LD9817B). 1. In auto ranging mode, the meter selects the best range for the detected input. This allows you to switch test points without re ranging. 2. In manual range mode, you need to select the desired range yourself. This allows you to override autoranging and lock the meter at the specified range. 3. For measurement functions with more than one range, the meter will use auto‑ranging mode as its default mode. When the meter is in auto range mode, the display will show the "AUTO" symbols. To enter and exit manual ranging mode: 1. Press the "RANGE" key. The meter enters manual range mode and the "AUTO" symbols disappears. Each time the RANGE key is pressed, the range will increase by one step. When the highest gear is reached, the meter will cycle to the lowest gear. NOTE: After you enter the reading hold mode, if you manually change the range, the meter will exit the mode. 2. To exit manual ranging mode, press and hold the "RANGE" key for two seconds. The meter returns to autoranging mode and the display shows the "AUTO" symbols. 1 x Multimeter (Battery Not Included) 2 x Test Lead 1 x Temperature Probe 1 x Manual