Key features

• •[Simple Installation & Expansion!] Secure this outdoor doorbell chime to your door or wall with the included screws for ultimate security. The doorbell is expandable to more 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 an FM wireless intercom doorbell that won't be affected by WiFi disruptions! Buy two receivers can be used as walkie-talkies, or use the mute mode on the indoor unit when you want silence.
• •[IPX55 Waterproof and 2000mA Rechargeable Battery] The intercom doorbell is waterproof even in bad weather. Features low power consumption, full battery lasts 4-6 months for the transmitter, and indoor machine lasts 1-2 days on a full charge.