# What are the battery power options and requirements for an Alarm.com Flex IO® sensor? **GoSafer Security Knowledge Base** *This operational reference is organized for GoSafer Security customers and staff. Alarm.com product names are retained where required for technical accuracy.* ## Overview The Alarm.com Flex IO® sensor uses four 1.5V AA lithium batteries. These batteries are included in the box. Under normal conditions, battery life is expected to be 2 years. Caution: Alkaline batteries or any battery greater than 1.5 V (e.g., the Saft 3.6 V) should not be used. The Alarm.com Flex IO® sensor device will only be awake when there is activity on the Alarm.com Flex IO® sensor contact sensor. The Alarm.com Flex IO® sensor only communicates sensor status updates one-way to the Alarm.com cloud, and does not receive any commands.
PlatformGeneral / Device
Content typeHow-to / Configuration
Source last updated2023-11-15
## Procedure The Alarm.com Flex IO® sensor uses four 1.5V AA lithium batteries. These batteries are included in the box. Under normal conditions, battery life is expected to be 2 years. Caution: Alkaline batteries or any battery greater than 1.5 V (e.g., the Saft 3.6 V) should not be used. The Alarm.com Flex IO® sensor device will only be awake when there is activity on the Alarm.com Flex IO® sensor contact sensor. The Alarm.com Flex IO® sensor only communicates sensor status updates one-way to the Alarm.com cloud, and does not receive any commands. ### Note: If batteries are not installed, a Low Battery trouble condition appears. For more information about installation, see Alarm.com Flex IO® sensor - Installation Guide. ## Source and support For GoSafer Security assistance, visit [gosafersecurity.com](https://gosafersecurity.com/). Original Alarm.com reference: [https://answers.alarm.com/Customer/Website\_and\_App/Cellular\_Sensor/Alarm.com\_Flex\_IO\_sensor/What\_are\_the\_battery\_power\_options\_and\_requirements\_for\_an\_Alarm.com\_Flex\_IO\_sensor%3F](https://answers.alarm.com/Customer/Website_and_App/Cellular_Sensor/Alarm.com_Flex_IO_sensor/What_are_the_battery_power_options_and_requirements_for_an_Alarm.com_Flex_IO_sensor%3F) Always verify safety, installation, compatibility, and current UI details against the original manufacturer documentation before operational use.