As many as you like.
How many smartphones can be used with a single GarageDoorBuddy?
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How can I integrate this device to my home automation system?How can I integrate this device to my home automation system?
You can enable the developer mode on the app first. Then use the REST API. Please refer to GDB Developer Mode guide for more information.
Can I add multiple monitors to my home network in one shot?Can I add multiple monitors to my home network in one shot?
During the setup, users need to add one monitor at a time. Connect the batteries for one monitor and follow the instructions to finish setup. Then connect batteries for another
Can I get notifications when the door was left open?Can I get notifications when the door was left open?
Yes, by default you will get notified when the door is left open for 15 minutes and the reminder will repeat every 15 minutes. You can change the notification time