Wuloo Wireless Intercom Doorbells for Home Classroom, Intercomunicador Waterproof Electronic Doorbell Chime with 1/2 Mile Range 3 Volume Levels Rechargeable Battery Including Mute Mode(Black, 1&2)
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[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!$69.98 – $89.97