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Alarm.com is choosing to end support for the 2GIG CT-100, the 2GIG CT-30, and the GE TSTAT-300 thermostats. It will not be possible to control those thermostats from the app or website for any new accounts created or accounts recycled after May 27th, 2018. Older accounts created before that date will not be affected.
Those devices do not meet the higher communication standards needed to support new thermostat capabilities. Those features, including HVAC Safeguards, add significant convenience and comfort for homeowners and dealers.
Instead of those devices, Alarm.com recommends you install any of the other thermostats listed on the Alarm.com Ecosystem.
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The content on this page has been written by a third party and is not maintained by Alarm.com. Any questions regarding the installation, maintenance, and/or usage instructions in this guide should be directed to the device manufacturer. To access the full installation guide, see 2GIG Z-Wave Thermostat (CT-100) - Installation Guide. |
The 2GIG Z-Wave Thermostat (CT-100) requires four AA Alkaline batteries
Special battery warning
- Always replace the batteries as soon as the Low Batt flashes. The thermostat is a battery-powered device. You must be responsible to replace batteries before they run out. Failure to replace batteries can result in overheating or excessive cooling of your house.
- Even if the Low Batt indicator does not flash, you should always replace the batteries at least once a year. Replacing the batteries also helps to prevent leakage that can corrode and damage the thermostat.
- If you are leaving your home for a month or more, you should replace the batteries as a precaution against battery failure in your absence.
- Always use new alkaline batteries.
- Failing to replace the batteries, when necessary, could cause the thermostat to lose power or malfunction. If the thermostat loses power, then the thermostat will not control the temperature, which could result in your HVAC system not functioning as you intended and lead to possible damage from overheating or excessive cooling.
- If the thermostat batteries fail with the heat OFF, this can result in NO HEAT and possible frozen or broken pipes and water damage.
- If the thermostat batteries fail with the cool OFF, this can result in NO COOL and could cause possible damage or excessive temperatures.
To replace the batteries in a 2GIG Z-Wave Thermostat (CT-100):
- Slide off the bottom cover.
- Install four new AA batteries following the marked polarity in the battery compartment. Put the battery in the negative end first against the spring, then push the positive end in.
- Slide the bottom cover back on.
- Once all the wires are connected, turn the AC power back on. Do this at the breaker you used to switch it off. The CT100 will power-up in the OFF mode.
