Linkage interlock function of the linkage door when used normally

The equipment can control the linkage door inside and outside the door can not be opened at the same time to form a channel. According to the query related information shows that the inner and outer door linkage interlock function when used normally, the device can control the linkage door inside and outside the door can not be opened at the same time to form a channel, the door status tone function when used normally, the device can control the inner door or the outer door open time more than 10 seconds, the controller buzzer will issue a reminder of the sound. The so-called linkage door refers to two doors with interlocking linkage function, that is, when a door is opened, the other door will not be able to open, only when the two doors are closed, you can open any one of them.