{"id":59249,"date":"2026-04-03T11:11:17","date_gmt":"2026-04-03T09:11:17","guid":{"rendered":"https:\/\/darpol.bydgoszcz.pl\/offer\/uncategorized\/syrena-wysokotonowa-skw-z-systemem-przeciwzamarzaniowym-dl-30-027-06\/"},"modified":"2026-04-03T11:18:31","modified_gmt":"2026-04-03T09:18:31","slug":"warning-horn-high-note-660hz-with-anti-freeze-system-dl-30-027-06","status":"publish","type":"product","link":"https:\/\/darpol.bydgoszcz.pl\/en\/offer\/rolling-stock\/locomotives\/warning-horn-high-note-660hz-with-anti-freeze-system-dl-30-027-06\/","title":{"rendered":"Warning horn high note 660Hz with anti-freeze system DL-30-027-06"},"content":{"rendered":"<p>The SKW high-frequency warning siren with an anti-freeze system is a professional warning device designed for railway applications, compliant with the Regulation of the Minister of Infrastructure of 18 July 2005. It provides a clear, high-pitched audible signal with high audibility, effective in open spaces and areas with high background noise.<br \/>\nHow does it work?<br \/>\nCompressed air flows through the sound generator, causing the diaphragms to vibrate. This produces high-frequency sound waves. The anti-freeze system maintains the temperature of the components at a level that prevents condensation and freezing.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Benefits:<\/strong><br \/>\n+ High signal effectiveness \u2013 the high-pitched sound cuts through ambient noise more effectively, enhancing safety.<br \/>\n+ Operation in all conditions \u2013 the anti-freeze system eliminates the risk of freezing and moisture condensation, ensuring continuous operation in winter.<br \/>\n+ Compliance with railway regulations \u2013 the device meets applicable standards, enabling its seamless integration into railway systems.<br \/>\n+ Simple and durable design \u2013 the robust construction (horn + sound generator) ensures a long service life and low operating costs.<br \/>\n+ Effective pneumatic operation \u2013 the use of compressed air (490\u2013980 kPa) ensures stable generation of sound waves at the required frequency.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Technical specifications:<\/strong><br \/>\nSiren type: Pneumatic<br \/>\nMaterial: steel, brass<br \/>\nFinish: powder-coated RAL 7001 (can be customised to customer requirements)<br \/>\nPower supply: 24V DC<br \/>\nRated power: 40W<br \/>\nOperating temperature: -30\u02daC \/ +70\u02daC<br \/>\nSupply air pressure: 490\u2013980 kPa<br \/>\nSound frequency: 660\u00b115 Hz<br \/>\nLength: 260 mm<br \/>\nPower connection thread size: G1\/2<br \/>\nWeight: ~3 kg<\/p>\n<p>&nbsp;<\/p>\n<p>Product complies with standards: PN-EN 15153-2, PN-EN 50155<br \/>\nApplication: locomotives, electric multiple units (EMUs), diesel multiple units (DMUs), maintenance vehicles<\/p>\n<p>&nbsp;<\/p>\n<div style=\"clear:both\"><a href=\"javascript:window.print()\"><i class=\"fa fa-print\" aria-hidden=\"true\"><\/i> Print this page<\/a><\/div>","protected":false},"excerpt":{"rendered":"<p>The SKW high-frequency warning siren with an anti-freeze system is a professional warning device designed for railway applications, compliant with the Regulation of the Minister of Infrastructure of 18 July 2005. It provides a clear, high-pitched audible signal with high audibility, effective in open spaces and areas with high background noise. How does it work? &hellip;<\/p>\n","protected":false},"featured_media":59244,"template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false},"product_cat":[262,4156,8521,327,333,351],"product_tag":[9083,3483,7826,9078,9076,9091,9090,9092,9073,9070,9072,9084,9082,9081,9074,9068,9079,9071,9069,9048,9077,4096,9089,9080],"class_list":{"0":"post-59249","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-rolling-stock","7":"product_cat-nowosci-en","8":"product_cat-other-exterior-products","9":"product_cat-locomotives","10":"product_cat-emu-dmu","11":"product_cat-freight-cisterns-others","12":"product_tag-anti-freeze-system","13":"product_tag-darpol-en","14":"product_tag-darpol-bydgoszcz-en","15":"product_tag-darpol-railway-siren","16":"product_tag-darpol-siren","17":"product_tag-high-frequency-industrial-siren","18":"product_tag-high-frequency-siren","19":"product_tag-high-pitched-siren","20":"product_tag-locomotive-siren","21":"product_tag-pneumatic-siren","22":"product_tag-railway-audible-signal","23":"product_tag-railway-equipment","24":"product_tag-railway-infrastructure","25":"product_tag-railway-safety","26":"product_tag-railway-safety-systems","27":"product_tag-railway-signal-siren","28":"product_tag-railway-siren","29":"product_tag-railway-warning-devices","30":"product_tag-siren-with-anti-freeze-system","31":"product_tag-skn-darpol-en","32":"product_tag-skn-darpol-siren","33":"product_tag-skw-en","34":"product_tag-skw-railway-siren","35":"product_tag-warning-siren","37":"first","38":"onbackorder","39":"shipping-taxable","40":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Warning horn high note 660Hz with anti-freeze system DL-30-027-06 - Darpol Bydgoszcz<\/title>\n<meta name=\"description\" content=\"SKW high-frequency siren with anti-freeze system \u2013 an effective warning device for the railways. 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