Manuals+ Q&A

Wireless questions & answers

Browse answered questions about Wireless, including setup, troubleshooting, compatibility and maintenance.

Browse topics

Answered questions

Newest questions

One of my BD&M Wireless Bluetooth Earbuds, Model: BDNM-E7S, Bluetooth Version: 5.0, is not holding a charge as long as the other. I purchased them in December 2023 on Amazon. It now lasts only 1.5 hours and the other close to 4 hours. I have cleaned all contacts and swapped charging ports to no avail. Am I missing something?

2026-06-11 1 answer

It sounds like you've already taken some good troubleshooting steps by cleaning the contacts and swapping charging ports. Since one earbud is significantly underperforming…

I purchased a doorbell from Amazon and found it was faulty. I have TWO of the squares as you should but in my case the both have the electrical squares that plug into electricity and nothing that can be put to the wall because it has the electrical two prongs onit. I tried returning it tow amazon but due to the fack that I was just getting up to walking and could not drive because I broke my leg I was late getting it back to amazon and they would not take it. My door bell is a CB-12 & CW-12 Can you help me ? I hate to throw the entire system in the trash,

2026-06-10 1 answer

I understand you're having trouble with your AVANTEK Wireless Doorbell Kit CB-12 & CW-12. It sounds like you received two plug-in receivers instead of…