9V battery not suitable for grandmother detector/alarm?

My grandmother has a life alert necklace which is essentially a wireless panic button. If there's an emergency, she can press it and it will summon emergency responders. It's great, unless you forget to put it on, which she does more often than not. I won't always be here to reminder her. So the purpose of this project is to verbally remind her to put it on before she ever leaves the room.

The Arduino's alarm arms at 8:30 each morning. If she then walks in front of a PIR sensor while it is armed, the Arduino fires a 5V relay that activates a greeting card sound module that says "put your beeper on."

I've read elsewhere that 9V batteries lack adequate amps and shouldn't be relied upon so I intend to move to a wall outlet solution. Even so, it seems as if the 9V is being drained incredibly fast so I'm asking if there's anything else I should be aware of. For one, the super glue I used in the projects housing has been off-gassing for days covering everything in the container with potentially plastic-devouring glue. I wonder if this has compromised the circuit somehow? Here's what I'm working with;




Should this setup be enough to drain a new 9V in a day or two? What improvements should I make? Thanks in advance!

A UNO is very power hungry when set against a "PP3" battery and you are wasting a whole 4V in the regulator.

If only on that account you would use a Pro Mini powered by three "AA" batteries and disable the "power" LED.

Next step would be to use a proper RTC module and make the Arduino sleep until woken.

Lose the relay board. A simple transistor will do the job fine. Possibly just a diode.

mikejkelley:
Even so, it seems as if the 9V is being drained incredibly fast so I'm asking if there's anything else I should be aware of.

An Arduino Uno won't last more than a few hours on a 9V PP3 battery. There's nothing you can do about that.

Add a PIR sensor, etc., and you're in big trouble.

You need to find an old phone charger or something ASAP.

Thanks! Paul__B those are great ideas, I'll definitely implement them in future iterations. Right now I'm just going to go w/ what I have on hand. I've been using a 9V wall adapter, it seems to be working well, obviously it's not the most efficient. Thanks again guys!