Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 20 - Jun 25
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Description
Haydon EN54-4 Boxed PSU 27.6V 2A, 2×7Ah HAY-PSUEN54-2ALHaydon HAY PSUEN54 2AL EN54 4 boxed uninterruptible power supply (24 V) The HAY PSUEN54 2AL is an EN54 4 compliant, tamperprotected boxed power supply and battery charger for fire detection and alarm systems. It provides a regulated 27. 6 V DC output with integrated battery charging and automatic switchover to battery on mains failure, plus battery monitoring and protection functions. EN54 4 certified for life safety fire alarm installations designed
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.8 ★★★★★
Based on 1106 reviews
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Product Reviews
★★★★★ 5
Excellent quality
Great quality kit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 24, 2025
★★★★★ 5
Boating maintenance
Perfect replacement parts for your scheduled maintenance, great price
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Reviewed in the United States on December 25, 2025
★★★★★ 5
worked great at fair price
works fine on my 1994 volvo penta 3.0 GL the main gasket was wrong, but my 3.0 GL does not have a gasket, the other parts appear to be universal
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Reviewed in the United States on June 5, 2025
★★★★★ 4
Good fit
Worked well with no problems.
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Reviewed in the United States on February 24, 2026
★★★★★ 5
Great replacement kit
Called around for quotes to get them replaced and everyone was quoting over $2k just for bellows. Figured I’d give it a try. The rubber is good quality and feels soft. Time will tell but this is an easy job if you’re mechanically inclined. Make sure you replace the plastic water pickup fitting while you’re at it. Found mine to be cracked on disassembly and had to wait for a new one. Should be a easy 3-4 hour job if your not doing the bearing and only doing bellows
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Reviewed in the United States on August 26, 2024
