@smerlino: Sorry I can not quite understand the situation.
If GDS37xx open door via RFID or PIN, there is a setting in the “Door System Settings => Unlock Hoding Time”, by default is “3 seconds” and you can put the correct time you want in “second” over there. That will control the door open and remains open for that specific time before lock again.
Also, there is a “Keep Door Open” option, you can configure the door open based on specific time frame, this is especially useful in library or school where some time the door open for general public then locked only open to RFID or PIN. You can also configure “Holiday”, basically the door will be controlled by the schedule you configured.
We provide free software GDSManager to allow you to see all the GDS3710 live image (GDS3705 no image as it is audio only device) and can open the door from the GDSManager console. The software can be downloaded here:
The pending GDS3710 1.0.5.x firmware will allow GDS37xx control multiple doors (like Master - Slave mode for multiple GDS device), so please keep tuned.
Again, please help to provide examples and explain what is your application or installation senarios and we will help if this is doable and will benefit other users.
Thank you for using Grandstream GDS products.