The Digital Multimeter that has 9999counts is a pocket-sized 3 9/10-bit automatic digital instrument. It has the features of stable performance, high precision, high reliability ,clear readings, and overload protection. With AAA 1.5V battery-driven, the instrument uses a large-screen LCD display, boost power supply, even in the 2.3V low battery edge, it can guarantee the backlight high brightness.
It is easy to carry, is a vast number of users extremely like the instrument. This series of instruments can be used to measure the DC voltage and AC voltage DC current and AC current, resistance, capacitance diode, continuity test, frequency measurement and true RMS measurement and other parameters. It is an ideal tool for the laboratory, factory, radio enthusiasts and families.
Features:
- True RMS
- NCV
- Auto range
- 9999 Counts display
- Black EBTN screen
- Main measurements: DC/ AC/ Resistance/ Continuity/ Diode/ Capacitance/ Frequency/ Temperature
- Flashlight
- Backlight
- Data Hold
- Auto power off
- Full unit symbol
- Max/Min function
- Relative value measurement
- Display: Black EBTN screen
- Maximum display: 9999 (3 9/10) bits automatic polarity display
- Measurement: double integral A / D conversion
- Sampling rate: about 3 times per second
- Overrange display: the most significant bit was "0L"
- Low voltage display: Yes
- Working environment: (0~
40)℃,relative humidity< 80% - Power supply: 2 x AAA 1.5V battery(not included)
- Volume (size): 142×70×32mm(L×W×H)
DC voltage(DCV)
| Accuracy Range |
   9999counts | Resolution |
| 100mV |  ±(0.5%+3) |
0.01mV |
| 1V | 0.1mV | |
| 10V | 0.001V | |
| 100V | 0.01V | |
| 1000V |  ±(0.8%+10) |
0.1V |
AC current(ACV)
| Accuracy Range |
  9999counts | Resolution |
| 100mV |  ±(0.8%+3) |
0.01mV |
| 1V | 0.1mV | |
| 10V | 0.001V | |
| 100V | 0.01V | |
| 750V |  ±(1.2%+10) |
0.1V |
DC Current (DC mA)
| Accuracy Range |
   9999counts | Resolution |
| 100mA |   ±(1.2%+10) | 10uA |
| 1000mA | 100uA |
AC Current(AC mA)
| Accuracy Range |
   9999counts | Resolution |
| 100mA |
|
10uA |
| 1000mA | 100uA |
DC/AC 10A Current (DC/ACA)
| Accuracy Range |
   9999counts | Resolution |
|  10A |   ±(2.0%+30) | 0.01A |
Resistance(Ω)
| Accuracy Range |
        9999counts | Resolution |
|  1000Ω | ±(0.8%+5) | 0.1Ω |
| 10kΩ | ±(0.8%+3) | 1Ω |
| 100kΩ | 10Ω | |
| 1000kΩ | 100Ω | |
| 10MΩ | 1kΩ | |
| 100MΩ | ±(2.5%+3)>60MΩfor reference only | 10kΩ |
Diodes and on-off test
| Range | Display value | Test Conditions |
| Diodes Buzzer  |
Diode forward voltage drop | Positive DC current of about 1mA, open circuit voltage of about 3V, |
| The buzzer buzzes for a long time, and the test resistance is less than(50±20)Ω |
Open circuit voltage is about 3V Press "SELECT" to switch between two functions  |
Capacitance(C)
| Accuracy Range |
   9999counts | Resolution |
| 100nF | 10pF | |
| 1000nF | 100pF | |
| 10uF | 1nF | |
| 100uF | 10nF | |
| 1000uF | 100nF | |
| 10mF | 11uF | |
| 100mF | 10uF |
Frequency measurement:
| Accuracy Range |
9999counts | Resolution |
| 10Hz | ±(0.1%+3) | 0.01Hz |
| 100Hz | 0.1Hz | |
| 1kHz | 1Hz | |
| 10kHZ | 10Hz | |
| 100kHz | 100Hz | |
| 1MHz | 1kHz | |
| 10MHz | 10kHz |
Temperature measurement (°C/°F)
| Accuracy Range |
    9999counts | Resolution |
| (-20-1000 )℃ | ±(1.0%+5)<400℃ ±(1.5%+15)≥400℃ |
1℃ |
| (0-1832 )℉ | ±(0.75%+5)<750℉ ±(1.5%+15)≥750℉ |
1℉ |
Package Includes:
1 x MT109 Multimeter(battery not included)
1 x English User Manual
1 x One Pair Test Pens
1 x Temperature Test Probe