Vanderbilt lite blue - VBB-OBRI

VLBIM06/15/15 v4.1.0
Chapter 2 VBB-RI 51
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).