The iSmartAlarm Remote Tag is designed for use in iSmartAlarm security systems. Once connected to your RF iSmartAlarm network, this device can be used to wirelessly control other connected iSmartAlarm products via on-device buttons, and activate the Hub's built-in 110 db siren. This device can also be attached to a key ring or bag to notify the system when someone leaves or arrives home. When an event is detected, the system can alert you with a phone call, SMS message, push notification, and email to your smartphone or tablet. Two lithium batteries are included for powering the Remote Tag, offering approximately 12,960 hours of battery life.