1.The work voltage of the receiver:220V ， woking current:≤120mA

2.Power≤2W   
                                                                                    
3.Music: 36 cord music for option      
                                                                      
4. Sound:   25-80dB ( 4 grade volumes)       
                                                          
5.Remote Control /Incept Distance:100m(in open air)      
                                    
6.Work Frequency:315MHz            
                                                                                   
7. Power Plug: EU plug       
                                                                                          
8.Work Voltage of the Emitter:12V(Battery Model:23A 12V   (Not Include))

9.Work Electricity of the Emitter≤15mA(20 times a day by calculating，a high quality   
                                                                       
10.LED Indicator:press the send button，LED indicator light will flash，

Emitter work and the receiver receive the order and then send out the beautiful music reminded you the VIP visit，

the blue-ray LED of the receiver will regular flash along with the music.

11) This product is of waterproof function and can be put outside the door       
                                                                                            
12) Temperature: -10  ~50