A battery powered one would be adequate for what I presume is the primary application, a problem that stretches back millennia. And cheaper than hosting a wake.
https://www.ancientpages.com/2016/02/09/strange-history-of-s...
https://www.ancientpages.com/2016/02/09/strange-history-of-s...
However Wikipedia says that's not the case and "a wake for the dead harks back to the vigil, "watch" or "guard" of earlier times. "
https://www.cnn.com/2023/02/07/us/new-york-woman-found-alive...