The LY-SHL100A handheld circuit tester (hereinafter referred to as the "instrument") is powered by a high-capacity, high-rate lithium battery. It features a compact design and handheld operation for easy portability. This specialized testing device is primarily used to measure contact resistance, circuit resistance, and other micro欧-level resistances in equipment such as switches and circuit breakers.

1. Before using this instrument, please read this manual carefully.
2. This instrument can be used both indoors and outdoors, but should be kept away from areas exposed to rain or corrosive gases.
3. The instrument should be protected from severe vibration.
4. Maintenance, care, and adjustment of the instrument shall be performed by qualified professionals.
5. After completing the test, 반드시 reset the instrument, turn off the power supply, and then disconnect the test cables.
6. During testing, moving the test clamp or disconnecting the power supply is strictly prohibited.

1. Features a 7-inch full-color high-definition touchscreen;
2. Features high output current, wide measurement range, multiple current settings available, and supports up to 100A output current;
3. The maximum testing duration across all gear ratios reaches 60 seconds, complying with national standards and meeting on-site operational requirements.
4. Wide measurement range (up to 50 mΩ for a 30A range), with high resolution of 0.01 μΩ and accuracy reaching 0.5%.
5. Features comprehensive protection functions including open-circuit protection and overheat protection;
6. Features test data storage capability, capable of saving up to 1,000 test records;
7. Powered by high-capacity lithium batteries, the device can withstand ≥600 tests per charge (with a test duration of 1 second);
8. Equipped with power management functionality, effectively reducing internal heat generation in the instrument and extending its service life.
9. Features Bluetooth functionality; a Bluetooth printer is configurable (optional).

1. Within one month from the date of sale, if any quality issues are detected, the instrument will be replaced free of charge.
2. For any quality issues with the instruments within one year, our company will provide free repairs.
3. For instruments used for over one year, our company provides long-term maintenance services and charges appropriate material fees.
4. In case of instrument malfunction, please return it to our company for repair. Do not disassemble the instrument yourself; otherwise, our company shall not be liable for any resulting damage.