Default Multiple, Simultaneous Bluetooth Connections

Does anyone know how many simultaneous bluetooth connections the S5 is capable of?

For example, I was initially worried that getting a Jawbone UP24 would not work alongside my Pebble watch, but it turned out to work fine. On top of that, I use my Jawbone Era headset constantly. So far everything works at the same time.

However, I was considering something called the Lockitron that has an option to unlock the door automatically via a bluetooth 4 connection.

If I got this in addition to my Pebble watch and Jawbone UP24, would this also work?

Thanks in advance to any help!!