?This is V006B2 Mini Home Security Digital Wireless Electronic Doorbell. 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            Blue Flash light on when guest pressing the remote buttonYou can install the doorbells in locations£¬ such as kitchen£¬ back yard£¬ bedroom£¬ etc. never miss the guestCompletely wireless operation - no wires or cables requiredUp-date intelligent flash light design brings convenience to the hearing handicappedWireless easy mounting design never affects your inner decoration and makes the doorbell anywhere you likeAll day long anti-interference system£¬ pretends the doorbell from interferences outside or between neighborsDelicate smart part£¬ makes the doorbell a saluting angel of dwelling house£¬ woke building£¬ hotel£¬ factory and so on. You never miss any guest                                                            Specifications            Melodies    38 kinds for selection 3 level song volume    <br>Size of Remote button    Approx 3.03"(L) x 1.69"(W) x 0.67"(H)    <br>Size of Door bell size    Approx 3.74"(L) x 2.56"(W) x 1.18"(H)    <br>Power Supply    2 x AA batteries (Not included)    <br>Color    Mainly White    <br>Remote Control / Receiver Distance    50m (open area)    <br>Ring Kinds    38    <br>Weight    238g / 8.39oz    <br>                                                            Package Includes            2 x V006B2 Mini Home Security Digital Wireless Electronic Doorbell1 x Power Switch1 x 23A 12V Alkaline Battery