Features: ●32 songs optional
●5 volume levels adjustable (including silence)
●Memory function
●Colorful indicator light
Specifications:
●Working voltage: 100~240V 50~60Hz AC
●Standby current: < 3mA (220V AC)
●Working current: < 11mA (220V AC)
●Frequency：433MHz
●Wireless distance: 100m (open area)
●Doorbell receiver can support up to 20pcs buttons
