I. Overview
The digital low resistance ohmmeter is a new generation of micro-resistance tester based on modern industrial design concepts. The product is a hand-held instrument, small in size and easy to carry with built-in lithium battery for power supply, which is suitable for field use. The “four-wire” current and voltage test method can meet the measurement of low resistances such as high-voltage switches, circuit breakers, and relay metal contacts.

II. Features
1. It is lithium battery-powered. More than 600 consecutive tests can be performed on a single charge, and the test process is simple and convenient;
2. The output current is up to 100A, multiple gears are available, and the test range is wide;
3. At 100A test, the longest test time can reach 60 seconds, which meets various applications in the field;
4. With wide range and high accuracy, it can be up to 4mΩ at 50A;
5. It has open circuit protection, overheating protection and other comprehensive protection functions;
6. With 5.0-inch super-large industrial-grade high-brightness color LCD screen, the display can be still clearly visible under strong sunlight;
7. With local storage and USB flash drive storage, it is convenient for data save.

III. Technical Indicators
1. Test current: 100A, 50A;
2. Range: 100A: 0 ~ 2mΩ;
                 50A: 0 ~4mΩ；
3. Minimum resolution: 0.1uΩ;
4. Accuracy: ± 0.5% (reading ± 5 words);
5. Output time: 1S, 3S, 10S, 20S, 30S, 60S;
6. Battery charging time: about 4 hours;
7. It can save 100 groups of data;
8. It can be used 600 times on a single charge;
9. Host size: 250mm * 155mm * 70mm;
10. Host weight: 1.94Kg.
11. The weight of the whole device: 6.35Kg.