Battery Doorbell 2k Power Requirements

I have just received the Battery Doorbell 2k and was planning on just using it on battery but i noticed in the quick start guide that the only mention of power is 8-24v AC so my question is, will my exisiting doorbell wiring be sufficient as it only has an 8v 1A AC transformer?

Nevermind, i installed it anyway and it turns out 8v AC with 1A is sufficient for powering the battery Doorbell 2k