... hole: 14-40mm, door thickness 30-80mm. 6. Good quality connection wire. 7. Nokia chargeable lithium battery, adaptor equipped, handheld checking. 8 ... to connect the indoor machine and outdoor machine by a wire we supplied, easy DIY for users and do not need ... is metal one, KDB02 video door bell with 2-5meters wire could help.2. 12 melodies for choice, 4 infrared lights ...