The VHLD delay module by CDVI provides a 3 to 10 seconds delay on any fail safe lock. The VHLD delay module provides a 3 to 10 seconds delay on any fail safe lock. When power is removed, the lock releases; once power is re-applied, the chosen delay operates before allowing power back to the lock. Convenient delay module Simple lock release without additional relay/timers Can be operated from simple push button Suitable for 12Vdc, fail safe locks 3-10 second adjustable timer