向地主推荐cheap "master" key control smartkey locks: one key for all

来源: 于 2012-10-07 19:05:46 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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Called "SMARTKEY 816 DEADBOLT KEY CONTROL"

Amazon, e-musa.com 有卖, ~$30 a piece.

The only issue is this is only for deadbolt lock, no similar thing for entry lock.