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Pro Series Bolt Electric Lock
U1：Lower U-bracket of Electric Bolt, for Using with DS-K4T100.
U2：Upper and lower U-bracket of Electric Bolt, for Using with DS-K4T100.
U1：Lower U-bracket of Electric Bolt, for Using with DS-K4T100.
U2：Upper and lower U-bracket of Electric Bolt, for Using with DS-K4T100.