Byron BY301 Wirefree Portable Door Chime Kit with 8 extra loud melodies (90-94dB rating depending on the sound), volume control and self learning.
Chime requires 3 x C batteries (NOT included).
Push requires 1 x CR2032 battery (included).
BY301: 100m (with flashing light alert for the hard of hearing).
The Byron BY301 has the following features:
Operating distance: 100m
Flashing light alert for the hard of hearing