Key specifications/special features

DC music doorbell
Frequency: 315MHz±0.5MHz
Power supply (chime): 2x1.5V AA (not included)
Power supply (push button): 1x12V 23A (included)
Operating range (open area): up to 120m
Sound options: 16 polyphonic melody 36 music
Carton: 80pcs/ctn
Size: 510×390×520mm