That's a pretty awesome mod! This is the model we got. We didn't try any others; we are lucky she doesn't have any type of dementia. Or it would be much harder!

Wireless Doorbell 3 Receivers and 2 Push Buttons, IP55 Waterproof Chime Kit, 1000 Feet Operating, LED Indicator, 4 Level Volume, 52 Chimes Options https://www.amazon.com/dp/B076BM47Q8/ref=cm_sw_r_cp_api_fBakBbGZPQ773