They tick like mad, don't let that distract you (place it out of range so you don't hear the ticking but in range so you hear the alarm!). Good luck with all of this, backpain is not funny at all.
Yeah, good point. Do you know of any timers that are specifically made for this...like where you could set your interval to every 2 hours?
Hm, not really but that's a trivial software project. And if you have a smartphone I'm sure 'there's an app for that'.