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Fail-Safe Electric Door Lock
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Electric Door Strike Lock ANSI Standard Heavy Duty for Door Access Control System Fail-Secure Fail-Safe Adjustable with Diode Installation Paper(Input Voltage 12VDC) : Amazon.co.uk: DIY & Tools
Adjustable Mode Fail-Secure&Fail-Safe Full Solid Stainless Steel Micro Electronic Door Lock with Emergency Key - China Electric Door Lock, Dead Bolt Lock | Made-in-China.com
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Electric Door Lock, Strike Release, 12/24V DC, Wooden Door Frames
