{
    "code": "3669",
    "title": "Communications Equipment, Not Elsewhere Classified",
    "sic_manual": "OSHA SIC Manual",
    "level": "Industry",
    "major_group_code": "36",
    "parent_code": "366",
    "parent_title": "Communications Equipment",
    "plain_english_definition": "",
    "summary_plain": "",
    "official_definition": "Establishments primarily engaged in manufacturing communications and related equipment, not elsewhere classified. Important products of this industry are intercommunication equipment, traffic signaling equipment, and fire and burglar alarm apparatus.",
    "official_source": "https://www.osha.gov/sic-manual/3669",
    "classification_note": "",
    "included_activities": [
        "Burglar alarm apparatus, electric",
        "Fire alarm apparatus, electric",
        "Fire detection systems, electric",
        "Highway signals, electric",
        "Intercommunications equipment, electronic"
    ],
    "excluded_activities": [],
    "confused_codes": [],
    "official_siblings": [
        {
            "code": "3661",
            "title": "Telephone and Telegraph Apparatus",
            "url": "https://siccode.com/sic-code/3661/telephone-telegraph-apparatus",
            "label": "Industry"
        },
        {
            "code": "3663",
            "title": "Radio and Television Broadcasting and Communications Equipment",
            "url": "https://siccode.com/sic-code/3663/radio-television-broadcasting-communications-equipment",
            "label": "Industry"
        },
        {
            "code": "3669",
            "title": "Communications Equipment, Not Elsewhere Classified",
            "url": "https://siccode.com/sic-code/3669/communications-equipment",
            "label": "Industry"
        }
    ],
    "official_children": [],
    "related_naics_codes": [
        {
            "code": "334290",
            "title": "Other Communications Equipment Manufacturing",
            "url": "https://siccode.com/naics-code/334290/communications-equipment-manufacturing"
        }
    ],
    "example_companies": [
        {
            "name": "Telamon Corp",
            "url": "https://siccode.com/business/telamon-corp",
            "city": "Carmel",
            "state": "IN",
            "reviewed": false
        },
        {
            "name": "AltiGen Communications Inc",
            "url": "https://siccode.com/business/altigen-communications-inc",
            "city": "San Jose",
            "state": "CA",
            "reviewed": false
        },
        {
            "name": "Lumentum Holdings Inc",
            "url": "https://siccode.com/business/lumentum-holdings-inc",
            "city": "Milpitas",
            "state": "CA",
            "reviewed": false
        },
        {
            "name": "IP Video Networks Inc",
            "url": "https://siccode.com/business/ip-video-networks-inc",
            "city": "San Diego",
            "state": "CA",
            "reviewed": false
        },
        {
            "name": "Infrax Systems Inc",
            "url": "https://siccode.com/business/infrax-systems-inc",
            "city": "Saint Petersburg",
            "state": "FL",
            "reviewed": false
        },
        {
            "name": "Novume Solutions Inc",
            "url": "https://siccode.com/business/novume-solutions-inc",
            "city": "Chantilly",
            "state": "VA",
            "reviewed": false
        },
        {
            "name": "Harris Corp",
            "url": "https://siccode.com/business/harris-corp-32",
            "city": "Palm Bay",
            "state": "FL",
            "reviewed": false
        },
        {
            "name": "Honeywell",
            "url": "https://siccode.com/business/honeywell-102",
            "city": "Melville",
            "state": "NY",
            "reviewed": false
        },
        {
            "name": "Silent Knight",
            "url": "https://siccode.com/business/silent-knight",
            "city": "Northford",
            "state": "CT",
            "reviewed": false
        },
        {
            "name": "Contemporary Service",
            "url": "https://siccode.com/business/contemporary-service",
            "city": "Morgantown",
            "state": "WV",
            "reviewed": false
        },
        {
            "name": "Sectek Inc",
            "url": "https://siccode.com/business/sectek-inc",
            "city": "Reston",
            "state": "VA",
            "reviewed": false
        }
    ],
    "company_count": 1003,
    "email_contact_count": 510,
    "phone_count": 899,
    "website_count": 1012,
    "database_as_of": "Nov 13, 2026",
    "count_type": "commercial",
    "count_disclaimer": "These are SICCODE.com commercial database counts, not official government establishment totals. Website-Reviewed & Enriched is a separate review of company websites for products, services, markets, and fit.",
    "canonical_url": "https://siccode.com/sic-code/3669/communications-equipment",
    "json_url": "https://siccode.com/sic-code/3669.json",
    "reviewed_by": "Industry Classification Review Team",
    "last_updated": "October 2026"
}