?This is Plug-in Type Digital Wireless Doorbell with Flashing Light. Doorbell chimes provides an extra security and convenience for you and your family£¬ you can put this Doorbell to any places of your room. This Wireless Doorbell is excellent for being used at home£¬ office£¬ shop or any places need to welcome the guests or the customers. Built-in anti-interference system£¬ avoid false ringing and miscommunication among different users. Your ideal choice!                                    Features            This doorbell has 38 kind of chord bells sound£¬ you may freely chooseWireless digital remote control£¬ do not interfere with each otherCompletely wireless operation - no wires or cables requiredWireless easy mounting design never affects your inner decoration and makes the doorbell anywhere you likePress launch button£¬ transmitters work£¬ while the receiver receive the order£¬ also made the sounds of music£¬ to remind you with a VIP visit£¬ while the receiver of the "blue" LED is accompanied by a regular flash music                                                            Specifications            Power    ¡Ü2W    <br>orking frequency    315MHZ    <br>Receiver operating voltage    110V ~ 220V    <br>Color    White &amp; Blue    <br>Remote control / receiver distance    50m (open area)    <br>                                                            Package Includes            1 x Plug-in Type Digital Wireless Doorbell with Flashing Light1 x Doorbell Switch1 x 23A 12V Battery                                                            Extra Info            For the charger: <br>If you need a EU charger£¬ click here: Universal US / EU to EU Power Plug Converter Adapter<br>If you need a AU charger£¬ click here: Universal US / EU to AU Power Plug Converter Adapter<br>If you need a UK charger£¬ click here: Universal EU US AU to UK AC Power Plug Converter Adapter