The voltage is good.
The amperage is low.
The usual designs for this specify a 2 amp transformer.
If you use it the transformer may heat up and burn out, or it may work and just be a little slower than the others.
I say use it, make the box you use big enough for a larger transformer and swap it out later if you need to.
Salvation Army and Goodwill stores are a good source for those transformers too.