Not that I know of. When I had sleep paralysis every night it was because I was sleeping on my back under a heated blanket on a futon. Changing that reduced the sleep paralysis. Finding your personal triggers is helpful. I mostly get it these days if I’m abruptly woken up and then fall immediately back to sleep. Try messing with how you’re sleeping, or look up suggestions on how to break out of it? On the rare occasion I still get it, I know how to break out because of that unfortunate period of time when I got to experiment every night.

I wonder if an alarm like you’re suggesting would just make regular alarm noises. That’d probably work. The one time an episode itself made me break out of it, I thought I heard my mother screaming in the kitchen, in a way that made me think she’d chopped off a finger. I immediately leapt out of bed and ran there, like, “are you okay???” thinking she’d be bleeding out. She looked at me and asked the same question, since she’d been minding her own business and suddenly i yelled and ran in. Alarm that makes a blood curdling scream, anyone?