I saw a speculation on r/lebanon:

https://www.gapollo.com.tw/rugged-pager-ar924/

I can't find the link now, but it was based on an image of the back of burned pager.

Edit: wayback machine link: https://web.archive.org/web/20240529091558/https://www.gapol...

It does look like this one, the page doesn’t open so J assume it’s the page.

The latest versions just exploded; not sure about the brands though

The ones that had explosives put into them.