Network Cable Tester
I recently purchased a network cable tester from JD.com. I have seen network consultants come to my home or my employer’s office to test the network.
This device is very inexpensive, costing only about 10 CNY. A similar product at Walmart would cost around 10 USD.
For this post, I am using an image from Amazon.com.
Source: Amazon.com
Source: Self-captured
Source: Self-captured