Thank you for your question on the model LA140WH door chime. To hard wire a second chime in another location you would need to run an 18 gauge wire (2 conductor wire for one door, 3 conductor wire for two doors) from the first chime to the second location. You would just parallel the wiring connections. You would also probably need to get a higher wattage transformer. You would need a 16 volt, 30 voltamp (watt) transformer.
Date published: 2015-01-13