{
    "device_id": 3,
    "device_name": "SPA-2 - Node02",
    "device_status": "retired",
    "sampling_interval_sec": 60,
    "location_name": "Wyry - biuro",
    "latitude": "50.1359943",
    "longitude": "18.8890917",
    "measured_at": "2026-04-11 20:37:58",
    "received_at": "2026-04-11 20:37:59",
    "temperature_c": "21.8",
    "humidity_pct": "51.2",
    "pressure_hpa": "986.7",
    "battery_voltage": "0.0",
    "signal_rssi": "-39.0",
    "quality_flag": "ok",
    "online_status": "offline"
}