This Byron BY201 Wireless Doorbell Set comes with a portable chime unit, giving you the flexibility to move your door chime throughout your home, garden or garage. The portable unit requires 3 x AA batteries (not included), and will ring up to 100 m (open distance) from the bell push.Box Contains1 x chime unit1 x bell push with battery & fixings

_Portable wireless doorbell and bell push
_Battery powered and portable within 100 m range
_Rings at 60 decibels with 6 melodies available
_Weatherproof and illuminated bell push
_Easily installed with no wiring required