ble_client:
  - mac_address: 01:02:03:04:05:06
    id: test_blec
    on_connect:
      then:
        - ble_client.ble_write:
            id: test_blec
            service_uuid: '1802'
            characteristic_uuid: '2a06'
            value: [0x04, 0x05, 0x06]
    on_disconnect:
      then:
        - ble_client.disconnect: test_blec

button:
  - platform: template
    name: Connect button
    on_press:
      - ble_client.connect: test_blec
      - ble_client.ble_write:
          id: test_blec
          service_uuid: '1802'
          characteristic_uuid: '2a06'
          value: !lambda return {0x01, 0x02};