The HZHL-Z-100A is a specialized digital display instrument designed for measuring the contact resistance and loop resistance of switch control equipment. It delivers a stable 100A DC test current in accordance with national standard GB763, enabling direct measurement of loop or contact resistance.
The device features pioneering functions including adjustable test time and automatic identification of high current disconnection. Test current and resistance values are clearly displayed on an LCD screen, and results can be printed or uploaded to a computer via an RS232 interface for storage and analysis.






We are an integrated trade and manufacturing company with our own factory.
Yes, we accept OEM/ODM/OBM and can customize the built-in software of the product according to the customer's special requirements.
In normal circumstances, products in stock can be received within 5 to 7 days via the fastest international express. Other situations may vary depending on the quantity of products ordered, whether there are special customization requirements, and the delivery time chosen.
We have professional internal and external packaging to ensure the safety and stability of the products during transportation. For fragile or other special parts, we will include an extra set to ensure that the customer can use the product immediately upon receipt.
For quality issues that are not caused by human error, we provide a one-year warranty from the time the product is delivered, and lifetime technical support. Other after-sales issues will be addressed by our professional technical staff within 24 hours. The product comes with a user manual and an operation video.