DC music doorbell
Frequency: 315MGHz±0.5MHz
Power supply (chime): 3x1.5V AA (not included)
Power supply (push button): 1x12V 23A (included)
Operating range (open area): up to 150m
Sound options: 16 polyphonic melody, 36 music
Carton: 56pcs/ctn
Size: 510x390x520mm
Receiver size: 115*70mm
Transmitter size: 78*45mm