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Contact Supplierhome security &privacy: gt-sd101 is locking device for out-swing entry door, which allows you to open the door few inches for identification.
patented auxiliary lock: featuring with patented thumb turn lock, gt-sd101 is precisely locked by turning the positioning knob. the auxiliary & secondary lock is effectively to prevent intruders.
durable & rustproof: gt-sd101 is made from quality zinc alloy, it is sturdy and rustproof.
stylish design: gt-sd101 thumb turn knob is möbiusband shape, it embellish your life with a simple elegant.
easy installation: gt-sd101 installation is quick and easy by following the instructions to fasten two main parts in appropriate position of door and jamb.





