Low battery, but on what device?

My system is telling me I have a low battery, but it's not telling me what device it is.  All it gives me is what I am guessing is a serial number, but it doesn't match any of the devices in my list.

I rarely log in to my system at home.  There's never really a need since everything is in working order.  But, I remember the device list used to show battery levels, and now some genius has decided that that's not an important thing to see anymore.

So, without opening up every entry and motion sensor and removing the batteries, is there some other way to figure out which device it is?

Thanks.