1个发射器两个接收器。不需要电池:按下发射器时,门铃会自动发电。内置智能光感应器和红外感应器,当有人经过(3m探测范围)且房间足够黑暗时,它将自动点亮35S,非常适合婴儿,儿童,老人,孕妇的房间。58种独特的 ...
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