$ ionic cordova plugin add cordova-plugin-bluetoothle
$ npm install @awesome-cordova-plugins/bluetooth-le
This plugin has the most complete implementation for interacting with Bluetooth LE devices on Android, iOS and partially Windows. It's a wrap around randdusing/cordova-plugin-bluetoothle cordova plugin for Ionic. It supports peripheral and central modes and covers most of the API methods available on Android and iOS.