With the IP keychain alarm remote control, you can individually control other Homematic IP devices and alarm functions within the Homematic IP security solution using the four buttons. You can activate or deactivate the alarm functions of your entire security solution at the push of a button and conveniently turn lights on or off. When arming your Homematic IP security components, you will be informed via the device LED if arming cannot be completed due to a missing internet connection or an insecure state of a sensor (for example, an open window or a low battery).