.. zephyr:code-sample:: ble_peripheral_ans :name: Peripheral ANS :relevant-api: bluetooth Send notification using Alert Notification Service (ANS). Overview ******** This sample demonstrates the usage of ANS by acting as a peripheral periodically sending notifications to the connected remote device. Requirements ************ * A board with Bluetooth LE support * Smartphone with Bluetooth LE app (ADI Attach, nRF Connect, etc.) or dedicated Bluetooth LE sniffer Building and Running ******************** To start receiving alerts over the connection, refer to `GATT Specification Supplement `_ section 3.12 for byte array to enable/disable notifications and control the service. See :zephyr:code-sample-category:`bluetooth` samples for details.