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Chapter 2 VBB-RI
Installing Diode for Lock Wiring - Relay
A diode is supplied with the VBB-RI which should be fitted across 12V and COM to protect the relay contacts.
The lock is wired across 12V and COM. A 0V link to COM is then required to complete the circuit. This will be
wired to NO or NC depending on lock type: Fail Open / Fail Closed (diagram above shows Fail Open).
VLBIM06/15/15 v4.1.0
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