Free App to program "The CellBox Prime" Intercom
Easily Formats the Programming Strings.
No Complicated Text Messages.
Client/Customer Information Saved for Easy Updating
Remote Programming
SMS Programmable Intercom with keypad.
Built in 7 day time clock
Auto open/close gates at pre-set times of the day/week
Program the Keypad via SMS text message
Store temporary keypad codes, time restricted codes, permanent codes.
Add and delete codes via SMS text for improved security.
Notifications to a master phone when access is granted
Control Both relay outputs with momentary, Latch and Unlatch buttons.
Do not disturb and watershed feature to prevent nuisance calls at night.
https://www.youtube.com/watch?v=nQZ0_1nhDmQ&t=4s

Due to Google's permission policy change, the app can no longer send SMS programming commands direct, you will be redirected to your phone's default messenger.