我很感激你能帮我。我们订了一扇带多点锁的复合前门。圆筒是一个35 - 35的牛油果。我要求把信箱放在最下面，这样别人就不能把手伸进信箱里转动钥匙了。当门准备好时，他们说他们不小心把信箱放在了中间，并给了我一个折扣，我接受了这个折扣，因为我们担心我们几乎完工的房子的安全，想尽快把门打开。这引起了一些问题，因为我们不能只是把门锁上，把钥匙留在后面，我们需要改变一些东西，但我不知道最好的解决方案是什么。除非钥匙转动，否则门是锁不上的，但晚上我们不能把钥匙放在门后面，以防有人把手伸进来转动钥匙。万一发生火灾，如果没有钥匙，我们就出不去了。所以我想改成拇指转弯——但我们的孩子可能会打开这个，太危险了。有人仍然可以通过信箱来转拇指弯。 So then I thought we could add a sucurity chain at the top with the thumb turn. Then we could get out in a fire but toddler can't escape. However - This may seem far fetched but if we were away somebody could turn the thumb turn through the letter box and simply cut through the chain. Or force it to break the chain - as its only fixed into the composite door / a wall. Is there another option I don't know about? I'm very security conscious so want to make sure our family are safe! I would really appreciate your help on this! If the thumb turn is the option what cylinder would you recommend in terms of strength or are they all similar? Thanks so much, Claire

更新:谢谢，非常感谢你的回答。门干扰器听起来是个不错的选择-所以你会把设置保持原样，但只是添加干扰器，因为即使有人设法把手伸进去&转动钥匙，他们也无法触及门锤?
也感谢研发锁匠——这也很有用