--- product_id: 55107522 title: "Arctic Hayes PHCO520 SleepSafe Carbon Monoxide Alarm Tester Spray 400 ml, Blue" brand: "arctic hayes" price: "¥3466" currency: JPY in_stock: true reviews_count: 8 url: https://www.desertcart.jp/products/55107522-arctic-hayes-phco520-sleepsafe-carbon-monoxide-alarm-tester-spray-400 store_origin: JP region: Japan --- # Up to 7 reliable tests Fire Brigade recommended 400ml aerosol can Arctic Hayes PHCO520 SleepSafe Carbon Monoxide Alarm Tester Spray 400 ml, Blue **Brand:** arctic hayes **Price:** ¥3466 **Availability:** ✅ In Stock ## Summary > 🛡️ Stay one step ahead—test your safety, own your peace of mind! ## 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?** ¥3466 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/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 design fits seamlessly into any toolkit or safety kit. - • **Trusted by Experts:** Endorsed by the Fire Brigade for regular, reliable sensor testing. - • **Maximize Home Security:** Regular testing prevents silent dangers—stay ahead and protect what matters. - • **Effortless Safety Checks:** Simple spray application ensures your CO alarms are always battle-ready. - • **Multi-Device Compatibility:** Perfectly pairs with SleepSafe alarms and flue gas analysers for versatile use. ## Overview The Arctic Hayes PHCO520 SleepSafe Carbon Monoxide Alarm Tester Spray is a 400ml aerosol designed for quick, effective testing of carbon monoxide sensors, delivering up to 7 tests per can. Recommended by the Fire Brigade, it ensures your alarms and flue gas analysers function flawlessly, safeguarding your home or workplace with ease and reliability. ## 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. ## Features - 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 | 31,737 in DIY & Tools (See Top 100 in DIY & Tools) 73 in Carbon Monoxide Detectors 635 in Home Security Systems | | Brand | Arctic Hayes | | Colour | Blue | | Compatible Devices | Carbon Monoxide Alarm | | Country Of Origin | United Kingdom | | Customer Reviews | 4.0 4.0 out of 5 stars (116) 4.0 out of 5 stars | | 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 | | Manufacturer | Arctic Hayes | | Manufacturer Warranty Description | No guarantee. | | Model Number | PHCO520 | | Number Of Items | 1 | | Part Number | ARCPHCO520 | | Product Style | Compact | | Sensor Type | Carbon Monoxide Sensor | | 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 on Reviewed in the United Kingdom 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! ### ⭐⭐⭐⭐⭐ It does what it says on the tin *by on Reviewed in the United Kingdom 8 June 2026* It took 2 three second bursts into the bag before my carbon monoxide alarm triggered.Follow the instructions and be patient. ### ⭐⭐⭐⭐ This triggers all four of our CO test devices reliably with just a puff of CO mix. *by on Reviewed in the United Kingdom 7 January 2023* Negative reviews were noted, but we decided to check this out anyway. Yes, the can is light! But gases are not heavy, are they? Seems like some purchasers have dud or empty cans, but ours worked well.We have here a collection of four CO testing 'devices' to check, an old wall-mount one without an LCD display, a pair of recent wall-mount ones with displays, and a recent pocket tester with display and other features. Normally, none of them respond significantly to the air in our home, which is good.Our extended family have a number of wood-burning stoves in assorted family homes, hence our precautions. I'm the engineer in the family, which is why I am the bloke checking up on our CO precautions. This test is just one part of our procedure, as we gain experience. Back in the mid-60s I was the student who had saved up for his own Vane exhaust gas analyser for testing our home-brew car fuel injection systems. But this is different! So the instructions are carefully read.The idea here is that one has an ordinary CO testing device or devices, and this small can of CO mix. The intention is that there is not enough CO in the can to damage people. I still would not sniff it, not a good idea!The test procedure is simple, in a place where there is normally no CO detected, one starts up the test device, and lets it build up to its measurement state - many CO sensors need to literally warm up before use. Worth re-reading the instructions for your device(s) too!So one pops the device under test into a sandwich bag or similar clear bag (clear so you can see any display or LEDs). Then fix the nozzle to the can. Insert the nozzle into the bag, squeeze the bag to expel excess air and maybe twist it up a bit to improve the seal . . . not airtight, draught-proof is good enough.Then . . . .. . . . then the (very clear) instructions say to give a 3-second burst of CO mix from the can. Or try to!After a fraction of a second my first test device howled like a banshee, flashed its display - nearly dropped it. I was using the small portable CO meter, and the display announced a lethal excess of Carbon Monoxide inside that bag. Much flashing and screeching! Success! Very short burst of test gas mix, too.The other devices produced similar results, but the (more expensive) portable pocket CO tester was much the fastest to respond of all of them. The others all passed the test, responding well within the time allowed by the instructions on the can. Do read them before you start.This can is not an expensive item when one considers the potential dangers from Carbon Monoxide (CO) in the home, car or other situation. By using a small bag and excluding the air from it the tested devices do respond eagerly to much less CO mix from the can, and at this rate it will probably last us a year despite having responsibility for the CO test devices in a number of family households.This literally does what it says on the tin. It worked exactly as described, and it could be the means of saving lives in your family by testing your CO devices reliably. CO kills silently.Recommended! ## 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.jp/products/55107522-arctic-hayes-phco520-sleepsafe-carbon-monoxide-alarm-tester-spray-400](https://www.desertcart.jp/products/55107522-arctic-hayes-phco520-sleepsafe-carbon-monoxide-alarm-tester-spray-400) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-23*