It is possible to have 2 or more doorbells.
If using battery power we do not suggest having more than 15 metres from bell push to doorbell unit.
If using transformer power then we suggest 8-12 volt transformer with 1 amp output per doorbell used. For example for:
2 doorbells use an 8-12 volt 2 amp transformer.
3 doorbells use an 8-12 volt 3 amp transformer or 3 x 8-12 volt 1 amp transformers.
