Wuloo Wireless Intercom Doorbell Expandable( Outdoor unit only, White)

Worldwide customers can order on Amazon.com with discount price. Expandable, outdoor unit only it's useless without indoor unit, this product works via set includes outdoor unit and indoor unit. please note that. Bullet Point: [Simple Installation & Expansion!] Secure this outdoor doorbell chime to your door or wall with the included screws for ultimate security. The wireless intercom doorbell is expandable, so you can extend nearly any indoor or outdoor system, even to a set of 2 transmitters and receivers each! [Long Range & Easy Sound Adjustments] This wireless doorbell transmits at a distance of up to 1/2 Mile! Customize your doorbell with 20 kinds of chimes and 3 volume levels! [100% Satisfaction Guaranteed] Love it or your money back! We provide a 2-year quality warranty and lifetime service for our intercom doorbell. Please feel free to contact us if you have any questions or concerns about your purchase. [Anti-interference & Multifunctional] This doorbell doubles as