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インターホン・システム HIKVISION DS-KB2421-IMのPDF ユーザーマニュアルをオンラインで閲覧またはダウンロードできます。HIKVISION DS-KB2421-IM 20 ページ。 Video door phone door station and indoor station
Video Door Phone·User Manual
Appendix
Installation Notice
While installing the indoor station, make sure that the distance between any two
devices is far enough to avoid the howling and echo. The distance between two devices
is recommended to be longer than 10 meters.
NOTE
Here devices refer to indoor stations, and door stations.
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