wireless intercom doorbell A doorbell and an intercom *Two-way intercom function to talk to visitors without opening the door *2 indoor units No barriers to communication; ideal for elderly or sick people who need care at home *long range of 1KM in open environment (signal penetration from 1st floor to 5th floor under normal use) Outdoor units *Built-in 2000Mah rechargeable battery, can be used for 6-8 months on a single charge *No need to dismantle and charge directly through the side DC port Indoor units *Built-in 2000mAh rechargeable battery With charging dock Tips:Please put it on the charging base to charge after each use to ensure the battery life.
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