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

2.Power≤2W???
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3.Music: 36 cord music for option??????
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4. Sound:?? 25-80dB ( 4 grade volumes)???????
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5.Remote Control /Incept Distance:100m(in open air)??????
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6.Work Frequency:315MHz ? ? ? ? ? ?
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7. Power Plug: EU plug???????
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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???
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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???????
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12) Temperature: -10? ~50???