MD-138
The wired NO or NC relay output door or window contact MD-138A or MD-138B (Please identify NO or NC output you need) When the door or window is open,...
Focus Security$4.00
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MD-155
MD-155 wired shutter door magnetic contact switch Focus brand wired shutter door switch works with alarm system With high sensitivity magnetic switch...
Focus Security$8.50
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MD-2000R
Ignitable Gas Alarm Home Security kit MD-2000R wireless environment safety sensor. The necessary home security component to wire to home alarm...
Focus Security$15.50
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