Induction doorbell
Frequency: 315MHz±0.5MHz
Power supply (chime): AC 220-250V
Power supply (alarm button): 1x12V, 23A, (included)
Operating range (open area): up to 120m
Sound options: 16 polyphonic melody 36 music
Carton: 50pcs/ctn
Size: 520x410x540mm
Receiver size: 69x104x23mm
Sensor size: 45x66x15mm

Characteristics
1Super anti-theft function, alarm bell ring is up to 105 decibels
2High sensitivity, small and lightweight, easy to install
3When inductor and magnetic stripe separate from 10mm, it will alert to inform master