# Binary input (open / close or OK / Alarm)

This section describes the settings common for Efento binary loggers. These parameters control how the relay interprets measurement states and determine the conditions required to trigger or reset the alarm. Adjusting these settings ensures reliable operation according to your application requirements.

| Logic Type          | Specifies whether the relay is considered “OK” when the channel is in a low state (wires not connected) or a high state (wires connected). **Normal logic:** low state = OK, high state = alarm; **Reversed logic:** low state = alarm, high state = OK. | Normal logic, Reversed logic.     |
| ------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------- |
| Minimal Stable Time | The minimum time (in milliseconds) the alarm condition must be stable before the device changes its state.                                                                                                                                               | Range: 15 to 10,000 milliseconds. |


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