I want 2 chimes for one doorbell, one upstairs, one downstairs. Everybody recommends getting a higher volt-amp transformer to power both, but they're hard to find and expensive. Whereas, the low-va transformers are dirt cheap and in fact come with some doorbell/chime kits for only about $2 more. Can I just mount a second low-va transformer next to the old one and run the same button wires to both? Do I have to match the va of the transformers? Or would I need a second, totally independent circuit from the button?
Thanks, jlfork

1 vs 2 transformers