--- product_id: 55107522 title: "Arctic Hayes PHCO520 SleepSafe Carbon Monoxide Alarm Tester Spray 400 ml, Blue" brand: "arctic hayes" price: "€ 21.69" currency: EUR in_stock: true reviews_count: 8 category: "Arctic Hayes" url: https://www.desertcart.hr/products/55107522-arctic-hayes-phco520-sleepsafe-carbon-monoxide-alarm-tester-spray-400 store_origin: HR region: Croatia --- # Up to 7 reliable tests Fire Brigade recommended 400ml aerosol precision Arctic Hayes PHCO520 SleepSafe Carbon Monoxide Alarm Tester Spray 400 ml, Blue **Brand:** arctic hayes **Price:** € 21.69 **Availability:** ✅ In Stock ## Summary > 🛡️ Stay ahead of danger—test your CO alarms like a pro! ## Quick Answers - **What is this?** Arctic Hayes PHCO520 SleepSafe Carbon Monoxide Alarm Tester Spray 400 ml, Blue by arctic hayes - **How much does it cost?** € 21.69 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/55107522-arctic-hayes-phco520-sleepsafe-carbon-monoxide-alarm-tester-spray-400) ## Best For - arctic hayes enthusiasts ## Why This Product - Trusted arctic hayes brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Portable:** Lightweight 0.1 kg aerosol fits easily in your toolkit or emergency kit for on-the-go peace of mind. - • **Trusted by Experts:** Endorsed by the Fire Brigade for regular sensor and battery testing—because safety isn’t optional. - • **Multiple Uses, One Can:** Perform up to 7 accurate tests per can, ensuring long-term protection for home or office. - • **Versatile Compatibility:** Specifically designed for SleepSafe alarms but also effective for flue gas analyser testing. - • **Effortless Safety Checks:** Simple spray-and-test design keeps your CO alarms in peak condition without hassle. ## Overview The Arctic Hayes PHCO520 SleepSafe Carbon Monoxide Alarm Tester Spray is a 400ml aerosol designed to functionally test carbon monoxide sensors with up to 7 tests per can. Recommended by the Fire Brigade, it ensures your alarms and flue gas analysers are reliably operational, providing essential safety for homes and workplaces. ## Description Arctic Hayes SleepSafe Carbon Monoxide Alarm Tester Spray is simple and easy to use and specially designed to test the SleepSafe range of carbon monoxide alarms. It ensures your carbon monoxide alarms are always in working order to protect your home or workplace. As recommended by the fire brigade, alarm batteries and sensors should be tested regularly. Comes in 400 ml aerosol can. Review: It works but be patient! - Works by putting CO alarm in a sealable sandwich bag, close off most of the bag, leave room for the little tube from the can and then a 3 second spray then fully seal. Be patient though! It can take a few seconds for your CO alarm to detect and go off! Review: That's a job - Does what it says ## Features - Pressurised container: May burst if heated. - 400ml aerosol can - Easy to use - Up to 7 tests per can - Functionally tests the sensor in carbon monoxide alarms - Can be used to test flue gas analysers - Recommended by the Fire Brigade, tests should be carried out regularly ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B071D7XKTD | | Best Sellers Rank | 22,020 in DIY & Tools ( See Top 100 in DIY & Tools ) 55 in Carbon Monoxide Detectors 437 in Home Security Systems | | Brand | Arctic Hayes | | Colour | Blue | | Compatible Devices | Carbon Monoxide Alarm | | Compatible devices | Carbon Monoxide Alarm | | Country of Origin | United Kingdom | | Customer Reviews | 4.0 out of 5 stars 108 Reviews | | Global Trade Identification Number | 05012804500247 | | Included Components | 1 x Arctic Hayes SleepSafe Carbon Monoxide Alarm Tester Spray 400 ml | | Item Type Name | 1 x Arctic Hayes SleepSafe Carbon Monoxide Alarm Tester Spray 400 ml | | Item Weight | 0.1 Kilograms | | Item weight | 0.1 Kilograms | | Manufacturer | Arctic Hayes | | Manufacturer Warranty Description | No guarantee. | | Model Number | PHCO520 | | Product Style | Compact | | Sensor Type | Carbon Monoxide Sensor | | Sensor type | Carbon Monoxide Sensor | | Style | Compact | | Unit Count | 1.0 count | ## Product Details - **Brand:** Arctic Hayes - **Colour:** Blue - **Compatible devices:** Carbon Monoxide Alarm - **Global Trade Identification Number:** 05012804500247 - **Item weight:** 0.1 Kilograms - **Manufacturer:** Arctic Hayes - **Number of items:** 1 - **Sensor type:** Carbon Monoxide Sensor - **Style:** Compact ## Images ![Arctic Hayes PHCO520 SleepSafe Carbon Monoxide Alarm Tester Spray 400 ml, Blue - Image 1](https://m.media-amazon.com/images/I/51U4ENe2DyL.jpg) ## Questions & Answers **Q: Does this canister contain carbon monoxide or some form of substitute?** A: I read on the product's label: "SleepSafe Test Gas contains a controlled amount of Carbon Monoxide in helium, sufficient to test CO Detectors ..." ## Customer Reviews ### ⭐⭐⭐⭐⭐ It works but be patient! *by N***X on 19 January 2026* Works by putting CO alarm in a sealable sandwich bag, close off most of the bag, leave room for the little tube from the can and then a 3 second spray then fully seal. Be patient though! It can take a few seconds for your CO alarm to detect and go off! ### ⭐⭐⭐⭐⭐ That's a job *by N***K on 3 April 2026* Does what it says ### ⭐ Completely empty when it arrived. *by O***E on 5 February 2026* Arrived very lightweight and completely empty. The lid was in place so shipping could not have caused the problem. Waste of my time sending it back via the Post Office. I am not alone with my comments about it being empty on arrival. ## Frequently Bought Together - Arctic Hayes PHCO520 SleepSafe Carbon Monoxide Alarm Tester Spray 400 ml, Blue - Arctic Hayes PH043A SleepSafe Smoke Alarm Tester Spray 150 ml, Blue - Smoke Sabre - smoke detector test aerosol --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/55107522-arctic-hayes-phco520-sleepsafe-carbon-monoxide-alarm-tester-spray-400](https://www.desertcart.hr/products/55107522-arctic-hayes-phco520-sleepsafe-carbon-monoxide-alarm-tester-spray-400) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-24*