best multimeter of 2020 DIY Hobby teardown Review
this is a New Multimeter since 16th Sep 202.
RM777 is an automatic range digital multimeter with 9999 words with a true effective value. The instrument is full-key operation with triple display.
Measure AC voltage and DC voltage
Measure AC and DC current
Measuring resistance/temperature
Test continuity and diode
Measuring capacitance/NCV
Measuring frequency and duty cycle
Anti-interference AC voltage detection
it is very easy and comfortable to Grip.
Here is the Specification Data
| Brand | RICHMETERS | Model | RM777 |
| Display (LCD) | 9999 | Range | automatic / manual |
| Material | ABS+TPE | Sampling rate | 3 times/sec |
| True RMS | yes | Data retention | yes |
| Screen backlight | yes | Low battery warning | yes |
| Automatic shut-down | yes | type of battery | 3 * 1.5V AA battery (not included) |
| Features | Range | Precision | AC frequency response |
| DC Current | 9.999A/999.9mA | (1.0%+3) | - |
| DC Current | 99.99mA/9.999mA/99.99uA/999.9uA | (0.8%+3) | - |
| AC current | 9.999A/999.9mA | (1.2%+3) | 40Hz~1kHz |
| AC current | 99.99mA/9.999mA/99.99uA/999.9uA | (1.0%+3) | 40Hz~1kHz |
| DC voltage | 999.9mV/9.999V/99.99V/999.9V/9.999mV/99.99mV/999.9mV | (0.5%+3) | - |
| AC voltage | 999.9mV/9.999V/99.99V/750.0V/9.999mV/99.99mV/999.9mV | (1.0%+3) | 40Hz~1kHz |
| Resistance | 99.99 Ohm | (1.0%+3) | - |
| Resistance | 999.9/9.999k/99.99k/999.9k | (0.5%+3) | - |
| Resistance | 9.999M ohm | (1.5%+3) | - |
| Resistance | 99.99M Ohm | (3.0%+5) | - |
| Capacitance | 9.999nF | (5.0%+20) | - |
| Capacitance | 99.99nF/999.9nF/9.999uF/99.99uF/999.9uF | (2.0%+5) | - |
| Capacitance | 9.999mF | (5.0%+5) | - |
| Frequency | 99.99Hz/999.9Hz/9.999kHz/99.99kHz/999.9kHz/5.000MHz | (0.1%+2) | - |
| Temperature | (-20~1000) C/ (-4~1832)F | (2.5%+5)C | - |
| Duty cycle | 1%~99% | diode | yes |
| On and off | yes | NCV | yes |
| working environment | temperature | 0~40 C | - |
| humidity | <75% | - |
you can find the resolution is very good, 0.001
the packlist included:
Multimeter x 1
Tester Leads x 1
Thermocouple x 1
Manual x 1
pouch x 1
color box x 1
