As many as you like.
How many smartphones can be used with a single GarageDoorBuddy?
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Use IFTTT to enable notification based on date/time for the monitorUse IFTTT to enable notification based on date/time for the monitor
1. Follow this post to make sure IFTTT works for your GDB monitor. Guide to Setup GarageDoorBuddy Monitor with IFTTT 2. The first step will make sure IFTTT are enabled
Can I connect GDB remote device to the wall button?Can I connect GDB remote device to the wall button?
Yes, you can connect GDB remote device either to the back of the wall button or the terminals on the opener.
What are the supported brands for GDB Remote?What are the supported brands for GDB Remote?
Linear ® Chamberlain ® Liftmaster ® Craftsman ® Genie ® Overhead Door ® Stanley ® Wayne Dalton ®