For the guarantee, contact the service center,there is no guarantee from our site
官方售后保修,我们网站无保修
Avantek Doorbell Kit
Wireless Door Bell, AVANTEK BA-11 Waterproof Battery Operated Doorbell Chime Operating at 1000 Feet, Portable Door Chime kit with 52 Melodies, 5 Volume Levels, and CD Quality Sound
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