7.Work Voltage of the Emitter:12V(Battery Model:23A 12V)
8.Work Electricity of the Emitter≦15mA(20 times a day by calculating,a high quality
battery can use for a year)
9.LED Indicator：press the send button，LED indicator light will shine,Emitter work
and the receiver receive the order and then send out the beautiful music reminded you
the VIP visit, the green-ray LED of the receiver will regular shine along with the music.
10.Music source：38songs supply for choice, Use the External button "up/down"to finfish.
(the music include Asia、Europe、Americas famous songs,also has 10 songs of Arab Music
Concert which the Middle East customers' like)
11.The function of volume regulate：high、middle、low three volume can choice，Use the
External switch(or button)to finish.