What thermostat is compatible for me to use?
As it appears you are currently utilizing the 2GIG Go!Control panel there are a few options available to you.
This list here covers 2GIG compatible devices, Z-Wave thermostats are at the bottom of page 3.
Note that due to the Thermostat End of Life Restrictions from Alarm.com, the 2GIG Thermostat CT100 from the aforementioned list will not be compatible with Alarm.com.
The ADC-T2000 from Alarm.com would be compatible with your panel as would the Linear GC-TBZ48 Thermostat
In addition to the above Z-Wave thermostats, Alarm.com is also compatible with NEST thermostats. Compatibility would require the Gold Interactive plan if using service through suretyDIY. NEST integration through Alarm.com would include:
-Current target temperature control
-Current mode control (Heat, Cool)
-Temperature notifications