This page shows the current inbound SMS configuration. Each number can be enabled for any or all of the control functions Shoulder-Tap and Relay Control .
The message format for SMS control is: function [index] [action]. The function is always required, but the index may be omitted if there is only a single device corresponding to the function; and for some functions, there is only a single action, so the action may be omitted in those cases as well. All text is case-insensitive.
Shoulder-Tap function can be used to bring up the cellular connection. Since this function has only one action ("on"), the message text should be "shoulder-tap".
Relay Control function can be used to turn a relay on or off.
To turn a relay on, the text should be "relay 1 on", or on a device with a single relay, just "relay on".
To turn a relay off, the text should be "relay 1 off", or on a device with a single relay, just "relay off".