{
  "id": "emitters:baby-monitor",
  "collection": "emitters",
  "slug": "baby-monitor",
  "name": "Wireless baby monitor",
  "summary": "A 2.4 GHz video monitor placed a metre from a cot is a continuously transmitting source at close range — roughly 8,000 µW/m² at 1 m for a 100 mW unit.",
  "status": "verified",
  "lastVerified": "2026-08-12",
  "data": {
    "aliases": [
      "nursery camera",
      "video monitor"
    ],
    "category": "radiofrequency",
    "environment": [
      "home"
    ],
    "bands": [
      {
        "label": "2.4 GHz ISM",
        "minHz": 2400000000,
        "maxHz": 2483500000
      },
      {
        "label": "DECT / FHSS audio",
        "minHz": 1880000000,
        "maxHz": 1930000000
      }
    ],
    "transmitPower": {
      "quantity": "power",
      "unit": "W EIRP",
      "value": 0.1,
      "basis": "regulatory",
      "note": "Typical Part 15 consumer transmitter power. Transmit power is the regulatory or typical maximum; real devices often transmit below it and reduce power when link quality allows.",
      "sourceIds": [
        "fcc-part15"
      ]
    },
    "dutyCycle": "Video monitors stream continuously; audio-only and voice-activated units transmit intermittently.",
    "distanceProfile": [
      {
        "meters": 0.3,
        "value": {
          "quantity": "power-density",
          "unit": "µW/m²",
          "value": 88400,
          "basis": "computed",
          "method": "S = EIRP / (4πd²) with EIRP = 0.1 W, d = 0.3 m",
          "sourceIds": [
            "fcc-part15"
          ]
        }
      },
      {
        "meters": 1,
        "value": {
          "quantity": "power-density",
          "unit": "µW/m²",
          "value": 7960,
          "basis": "computed",
          "method": "S = EIRP / (4πd²) with EIRP = 0.1 W, d = 1 m",
          "sourceIds": [
            "fcc-part15"
          ]
        }
      },
      {
        "meters": 3,
        "value": {
          "quantity": "power-density",
          "unit": "µW/m²",
          "value": 884,
          "basis": "computed",
          "method": "S = EIRP / (4πd²) with EIRP = 0.1 W, d = 3 m",
          "sourceIds": [
            "fcc-part15"
          ]
        }
      }
    ],
    "mitigations": [
      {
        "action": "Place the unit at least 2–3 m from the cot rather than on the cot rail.",
        "effect": "Increasing 0.3 m to 3 m is a 100× reduction in power density.",
        "sourceIds": [
          "itu-fs-relations"
        ]
      },
      {
        "action": "Choose an audio-only, voice-activated, or wired monitor.",
        "effect": "Removes continuous transmission during sleep."
      }
    ],
    "measureWith": [
      "broadband-rf-meter"
    ],
    "related": [
      "limits:sbm-2024-rf-extreme",
      "emitters:wifi-router"
    ]
  },
  "sources": [
    {
      "id": "fcc-part15",
      "title": "47 CFR Part 15 — Radio Frequency Devices (unlicensed transmitter power limits)",
      "publisher": "U.S. Government Publishing Office (eCFR)",
      "url": "https://www.ecfr.gov/current/title-47/part-15",
      "kind": "regulation",
      "retrieved": "2026-08-12"
    },
    {
      "id": "itu-fs-relations",
      "title": "Free-space path loss and power density relations (ITU-R P.525)",
      "publisher": "International Telecommunication Union",
      "url": "https://www.itu.int/rec/R-REC-P.525/en",
      "kind": "standard",
      "retrieved": "2026-08-12"
    }
  ],
  "links": {
    "self": "https://emfbase.com/api/emitters/baby-monitor",
    "html": "https://emfbase.com/emitters/baby-monitor",
    "markdown": "https://emfbase.com/emitters/baby-monitor.md",
    "collection": "https://emfbase.com/api/emitters"
  }
}