This resource returns latest data for given trailer number.
Those are: device_id, position (lon,lat), speed, course, npm, power voltage, charge, gsm_signal, doors and bolt status, last reading datetime.

Number of temperature readings depends on installed thermometers. There can be none or up to four.

  {
    "error": false,
    "msg": "Trailer details",
    "status": 200,
    "_data" : {
      "device_id": 4,
      "device_number": "SG0000000004",
      "registration_number": "ELE78UT",
      "latitude": 513558,
      "longitude": 193238,
      "speed": 63,
      "course": 121,
      "npm": 205,
      "voltage_v": 129,
      "charge": 100,
      "gsm_signal": 15,
      "doors": 0,
      "bolt": 0,
      "unlock_code": "0888303",
      "timestamp": 1399293434,
      "driver_1_name": "Jan Kowalski",
      "driver_1_tel": "123456789",
      "driver_2_name": "Jon Doe",
      "driver_2_tel": "987654321",
      "temperature_1": "6",
      "temperature_2": "-5",
      "temperature_3": "-6",
      "temperature_4": "-4",
      "temperature_timestamp": 1399293434,
      "buckles_cover": 1,
      "bolt_shield": 0,
      "truck_connection": null,
      "move_detector": 1,
      "side_wall": 0
    }
  }

  {
    "error": true,
    "msg": "No trailer found for given registration number.",
    "status": 406
  }