core/homeassistant/components/nuki/icons.json

{
  "entity": {
    "binary_sensor": {
      "ring_action": {
        "default": "mdi:bell-ring"
      }
    }
  },
  "services": {
    "lock_n_go": "mdi:lock-clock",
    "set_continuous_mode": "mdi:bell-cog"
  }
}