core/homeassistant/components/tedee/icons.json

{
  "entity": {
    "binary_sensor": {
      "uncalibrated": {
        "state": {
          "on": "mdi:sync-alert",
          "off": "mdi:sync"
        }
      }
    },
    "sensor": {
      "pullspring_duration": {
        "default": "mdi:timer-lock-open"
      }
    }
  }
}