No trouble with wires but an easy to install doorbell with the Byron wireless doorbell kit. The doorbell has a range up to 60 metres and can be wall mounted. Completely wireless doorbell kit, due to the use of batteries No struggles with wiring The doorbell has a range up to 60 metres Choose from 4 different melodies Easy to expand with other products from the BY series Easy to use The wireless doorbell kit contains a bell push and a portable door chime. Take the portable door chime anywhere by just using 3x AA batteries, this way you will never have to miss a visitor. Wide range The weatherproof bell push with IP44 rating and indoor unit have a range up to 60 metres. The range might be reduced by walls and obstacles: - Open space: 100% range - Wooden walls and large obstacles, such as closets and other large furniture: 80-95% range - Stone walls and large obstacles: 60-80% range - Metal walls and large obstacles: 0 - 20% range Choose from 4 different melodies The doorbell kit has 4 different melodies that allow you to choose the melody you like the most. Easy to install You can mount the bell push by just using 2 screws or double coated tape. The bell push and indoor units can be connected in just seconds. The doorbell will not interfere with your neighbors doorbell because it has many self-learning codes that automatically choose an unique frequency. You can also mount the portable door chime to the wall if you prefer to have it on a fixed place. Expandable kit You can expand the doorbell set by adding an extra bell push, for example to have a doorbell at both your front and back door. Therefore, you can choose from the following Byron products: BY30, BY33, BY34, BY35, BY37 and BY37Z. Box Contains 1 x chime unit (Batteries not included) 1 x bell push with battery & fixings 1 x instruction manual