The Byron BY212 portable and plug in wireless door chime has a 100 metre operating distance with an 85db rating. It provides a choice of six melodies and volume control. Self-learning codes will keep the code even when the batteries run out and are replaced. This twin pack chime can have up to 6 bell pushes controlling the chime. Both chime units can be placed in different places within the operating distance to maximise the volume.
The Portable Chime requires 3 x AA batteries (NOT included).
The Push requires 1 x 23A battery (included).