release-delayrelay
nounA release-delayrelay is a small switch that waits a little while before it lets something go.
The toy car's release-delayrelay kept the wheels locked for two seconds after the button was pressed.
OTHER MEANINGS
2. A control device that postpones the disengagement of a mechanism until a set interval has passed.
Engineers fitted a release-delayrelay to the gate so it would not snap shut too quickly.
3. In electronics, a relay whose contacts open only after a predetermined delay following coil de-energization.
The release-delayrelay protected the motor by keeping the brake engaged briefly after power was cut.
4. A safety component that slows the release of a latch or clamp to prevent sudden movement.
The workshop's press uses a release-delayrelay to hold the guard in place for an extra moment.