Byron - BY401W Wirefree Wall-Mounted Chime Kit 60m White - BYRBY401W
The BYRBY401W has the following specifications:
Byron BY401W Wirefree Wall-Mounted Chime Kit with 4 melodies, self-learning and a 60m operating distance.
Chime requires 3 x AA batteries (NOT included).
Push requires 1 x CR2032 battery (included).
Available in 2 colours.