Function: be used to announce people there are guests or customers outside your door.

Basic introduction:

1, 10 melodies , single music style or simultaneous music and flash light 2, strong anti-interference 3, 3 AA batteries for receiver, 1 AAA battery for transmitter 4, 30M-50M transmitting range 5, translucent shell for ray shine

OEM will be welcome

Please feel free to contact us for more details. Thanks