{"product_id":"allen-bradley-855h-bca20adr4","title":"855H-BCA20ADR4","description":"\u003ch2\u003eOverview of Allen Bradley 855H-BCA20ADR4\u003c\/h2\u003e\nThe Allen Bradley 855H-BCA20ADR4 is a high-performance industrial horn integrated with a visual beacon, engineered for effective audible and visual signaling in demanding industrial settings. Designed to operate on 230V AC, this model meets international standards for both sound level and durability. It can be installed using a standard base with back feed or conduit feed mounting. With a sound output rated at 100 dB, the 855H-BCA20ADR4 provides clear multi-tone alerts suitable for noisy environments, while the integral beacon further enhances visibility for critical notifications. The unit’s construction enables reliable operation indoors and outdoors, making it a proven choice for manufacturing plants, process facilities, and automation panels that require audible alarms and visual warnings.\n\n\u003ch2\u003eKey Features of Allen Bradley 855H-BCA20ADR4\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAudible output rating: 100 dB, supporting 10 selectable tones\u003c\/li\u003e\n  \u003cli\u003eIntegrated beacon for visual signaling\u003c\/li\u003e\n  \u003cli\u003eOperates at 230V AC, 50\/60 Hz\u003c\/li\u003e\n  \u003cli\u003eSurface mounting with standard base (back or conduit feed)\u003c\/li\u003e\n  \u003cli\u003eSuitable for indoor and outdoor applications\u003c\/li\u003e\n  \u003cli\u003eReliable design for industrial environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specs of 855H-BCA20ADR4\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePower Supply: 230V AC, 50\/60 Hz\u003c\/li\u003e\n  \u003cli\u003eOutput Level: 100 dB at 10 selectable tones\u003c\/li\u003e\n  \u003cli\u003eMounting: Standard base - back feed or conduit feed\u003c\/li\u003e\n  \u003cli\u003eEnclosure: Weather-resistant for indoor\/outdoor use\u003c\/li\u003e\n  \u003cli\u003eVisual Element: Beacon included\u003c\/li\u003e\n  \u003cli\u003eDimensions: Length Approx. 7.8 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications \/ Use Case\u003c\/h2\u003e\nThe Allen Bradley 855H-BCA20ADR4 is designed for industries where advanced signaling and alerting are critical for safety and workflow efficiency. Common applications include factory automation systems, manufacturing lines, process control rooms, machinery safety systems, and site perimeter alarms. Its loud, multi-tone capability allows it to cut through ambient noise, ensuring operators, technicians, and emergency teams receive immediate notification of system changes, hazards, or equipment status updates. The visual beacon adds an extra layer of signal, making it effective even in areas where hearing protection is used or during high ambient noise periods. It is well suited for integration in control panels, machine enclosures, and large production areas requiring clear, reliable annunciation.\n\n\u003ch2\u003eRelated Resources\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/\" target=\"_blank\"\u003eLeadTime.ca – Industrial Automation Components \u0026amp; Repair Services\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/collections\/allen-bradley\" target=\"_blank\"\u003eView All Allen Bradley Products\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/blogs\/learning-center\/examples-of-industrial-automation-control-systems\" target=\"_blank\"\u003eExamples of Industrial Automation and Control Systems\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/products\/allen-bradley-194e-sy\" target=\"_blank\"\u003eAllen Bradley 194E-SY Disconnect Switch\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/products\/allen-bradley-1783-ims28rac\" target=\"_blank\"\u003eAllen Bradley 1783-IMS28RAC Managed Switch\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":47870779719979,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/4671\/7995\/files\/Leadtime_09114f8c-58c8-4d7b-a600-1c7b1d7d8763.png?v=1723532281","url":"https:\/\/leadtime.ca\/products\/allen-bradley-855h-bca20adr4","provider":"LEADTIME","version":"1.0","type":"link"}