Hello miles dawkins,
Thank you for writing in.
Since there are many products with similar product titles, could you please tell us the ASIN or the link of the product?
And could you please tell us more details of your operation, such as the wiring, the load, the input voltage/current?
If you can, we sincerely hope that you can send us some images or video to let us check the problem details.
With your help, we can find a solution more quickly.
Best regards