### 6.3.4 Interlock Settings

Interlock can be set for any two or more lock belong to one access control panel, so that when one door is opened, the others will be closed. And you can open one door only when others are closed.

Before interlock setting, please make sure the access controller is connected with door sensor according to the Installation Guide, and the door sensor has been set as NC or NO state.

Add interlock settings:

1. Click [Access Control System] - [Door configuration] - [Interlock settings] - [Add] to enter the interlock setting edit interface;

2. Select device to show interlock settings. Since one device can only correspond to one interlock setting record, when adding, interlocked devices can not be seen in the dropdown list of the device. When deleting established interlock information, the corresponding device will return to the dropdown list. The setting page will vary with the number of doors controlled by the selected device:

A one-door control panel has no interlock settings;

A two-door control panel: 1-2 two-door interlock settings;

A four-door control panel: 1-2 two-door interlock, 3-4 two-door interlock, 1-2-3 three-door interlock, 1-2-3-4 four-door interlock;

3. Select interlock settings, tick an item (multiple interlocks can be selected as long as doors are not repeated), click [OK] to complete setting, and then the added interlock settings will be shown in the list.

For example, select 1-2-3-4 four-door interlock, if you want open door 3, doors 1, 2 and 4 needs to be closed.

? Note: When editing, the device can not be modified, but the interlock setting can be modified. If interlock setting is not required for the device any more, the interlock setting record can be deleted. When deleting a device record, its interlock setting record, if exist, will be deleted.