The HZHL-Z-100A is a specialized intelligent loop resistance tester designed for measuring the contact resistance and loop resistance of switch control equipment. The test current follows the national standard GB763, which recommends 100A DC, directly measuring the loop or contact resistance.
It features pioneering functions including settable test time and automatic identification of high current disconnection. The device displays test current and resistance values on an LCD screen and can print the output or upload it to a computer via an RS232 interface for storage.






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.