Smart PIERRE - Delay Function

DELAY FUNCTION OPTIONS

1. Enter Delay in Seconds

• Function: Sets the delay time before the output (I/O) is activated.
• UI Text: Displays (in seconds) the remaining time before the I/O is activated.
• Use Case: Useful when you want to delay device activation for safety, confirmation, or timing optimization.

2. Clear Delay (Checkbox)

• Function:
  • Enabled: The delay countdown will reset or cancel if the condition becomes false before the delay ends.
  • Disabled: The delay will complete regardless of whether the condition stays true.
• UI Text: Clear delay when conditions are changing to false.

3. Start Delay on Condition Change (Checkbox)

• Function: Determines when the delay countdown should begin:
  • Enabled: Delay starts when condition becomes true (activated).
  • Disabled: Delay starts when condition becomes false (deactivated).
• UI Text:
  • If enabled, the delay countdown starts when the condition is activated.
  • If disabled, the delay countdown starts when the condition is deactivated.

4. Inverted (Checkbox)

• Function: Inverts the logic of the condition. For example, instead of triggering on condition true, it triggers on false.
• Use Case: Useful when you want to act when something stops happening, such as a door being closed rather than opened.

Example 1 – Light delay ON after motion

In this example, the delay is used to turn the light ON only when motion remains detected for a specific period.

1. Select the motion sensor as the condition.
2. Set the condition to the required state.
   The motion sensor must detect movement for the delay to continue.
3. Set the Delay to 10 seconds.
   The light will be turned ON only if motion remains detected for 10 seconds.
4. Enable Clear Delay.
   If motion stops before the 10-second countdown expires, the countdown is cancelled.
5. Enable Start Delay on Condition Change.
   The countdown starts when motion is detected.
6. Disable Inverted.
   The delay operates according to the normal condition logic.

As a result, when motion is detected, the 10-second countdown starts. If motion stops before the countdown finishes, the delay is cancelled and the light remains OFF. If motion remains detected for the full 10 seconds, the light is turned ON.

Example 2 – Turn OFF ventilation when a window remains open

In this example, the ventilation is allowed to operate only when the window is closed. If the window remains open for more than 5 minutes, the ventilation is turned OFF.

1. Select the window magnetic contact as the condition.
2. Set the magnetic contact condition to When Open.
   The delay condition will be based on the window being open.
3. Set the Delay to 300 seconds.
   The ventilation will be turned OFF if the window remains open for 300 seconds.
4. Enable Clear Delay.
   If the window is closed before the 300-second countdown expires, the countdown is cancelled and the ventilation remains ON.
5. Enable Start Delay on Condition Change.
   The countdown starts when the magnetic contact changes to the Open state.
6. Enable Inverted.
   The condition logic is inverted, meaning that the ventilation is allowed to operate when the window is closed. When the window is opened, the inverted condition becomes inactive and the delay starts.

As a result, the ventilation operates normally while the window is closed. When the window is opened, the 300-second countdown starts. If the window is closed before the countdown finishes, the delay is cancelled and the ventilation continues to operate. If the window remains open for the full 300 seconds, the ventilation is turned OFF.

Example 3 – Safety delay before alarm siren

In this example, the delay is used to give the user time to cancel an alarm condition before the siren is activated.

1. Select the intrusion sensor as the condition.
2. Set the condition to the required state.
   The intrusion condition must remain active for the delay to continue.
3. Set the Delay to 30 seconds.
   The siren will be activated only if the intrusion condition remains active for 30 seconds.
4. Enable Clear Delay.
   If the intrusion condition clears before the 30-second countdown expires, the countdown is cancelled.
5. Enable Start Delay on Condition Change.
   The countdown starts when the intrusion condition becomes active.
6. Disable Inverted.
   The delay operates according to the normal condition logic.

As a result, when an intrusion is detected, the 30-second countdown starts. If the intrusion condition clears before the countdown finishes, the delay is cancelled and the siren remains OFF. If the condition remains active for the full 30 seconds, the siren is activated.

Example 4 – Notify if door stays open

In this example, the delay is used to send a notification only when a door remains open for a specific period.

1. Select the door magnetic contact as the condition.
2. Set the condition to the required state.
   The door must remain open for the delay to continue.
3. Set the Delay to 60 seconds.
   The notification will be triggered only if the door remains open for 60 seconds.
4. Enable Clear Delay.
   If the door is closed before the 60-second countdown expires, the countdown is cancelled.
5. Enable Start Delay on Condition Change.
   The countdown starts when the door is opened.
6. Disable Inverted.
   The delay operates according to the normal condition logic.

As a result, when the door is opened, the 60-second countdown starts. If the door is closed before the countdown finishes, the delay is cancelled and no notification is sent. If the door remains open for the full 60 seconds, the system sends a notification.

USAGE TIPS

• Use Clear Delay = Enabled when actions should be skipped if the triggering condition doesn’t last long enough.
• Use Start Delay = Disabled for actions that happen after a condition ends (like cooldowns).
• Use Inverted to reverse the logic of the condition — helpful for off-state monitoring.