{"title":"Pro-Tech Commercial CO Alarms","description":"\u003c!-- pt-banner --\u003e\u003cpicture style=\"display:block;width:100%;margin:0 0 16px;\"\u003e\u003csource media=\"(max-width:767px)\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/8882\/9740\/files\/protech-8505-cod-mobile-1080x1350.png\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/8882\/9740\/files\/protech-8505-cod-desktop-3000x950.png\" alt=\"Pro-Tech commercial CO alarms - battery-powered carbon monoxide monitors for the workplace\" width=\"3000\" height=\"950\" loading=\"eager\" style=\"display:block;width:100%;height:auto;margin:0;border:0;\"\u003e\u003c\/picture\u003e\n\u003cp\u003eFinding a battery-powered CO monitor built for the workplace can be a real challenge, especially when you need to adhere to Cal\/OSHA, OSHA, or NIOSH recommendations. Home CO alarms are everywhere, but they're built for bedrooms, not break rooms. And hardwired commercial systems need both an electrician and a big budget.\u003c\/p\u003e\n\u003cp\u003eThe Pro-Tech 8505 fills the gap. It requires no wiring, installs in minutes, and when used properly will help protect workers and customers from the risks of CO poisoning.\u003c\/p\u003e\n\u003cp\u003eFor over 10 years the Pro-Tech 8505 has been manufactured in Canada by Defender Detectors, a leader in low-level carbon monoxide alarms and detectors.\u003c\/p\u003e","products":[{"product_id":"pro-tech-8505-commercial-co-alarm","title":"Pro-Tech 8505 Commercial CO Alarm for Workplaces","description":"\u003c!-- pt-banner --\u003e\u003cdiv style=\"width:100%;margin:0 0 20px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/8882\/9740\/files\/protech-8505-app-retail-2000x750.jpg\" alt=\"Pro-Tech commercial CO alarm on the wall of a retail store - your customers breathe your air\" width=\"2000\" height=\"750\" style=\"display:block;width:100%;height:auto;\"\u003e\u003c\/div\u003e\n\u003csection class=\"protech-8505-description\"\u003e\n\u003ch2\u003eA CO Alarm Built for the Workplace\u003c\/h2\u003e\n\u003cp\u003eCarbon monoxide comes from fuel-burning equipment such as forklifts, heaters, generators and water heaters, and it has no color, odor or taste. Home CO alarms are built for the residential UL 2034 standard, which does not allow a reading to be displayed below 30 ppm. The \u003cstrong\u003ePro-Tech 8505 Commercial CO Alarm\u003c\/strong\u003e is designed for employers: it alarms based on the workplace exposure limits set by OSHA, NIOSH, ACGIH and Cal\/OSHA, and it shows the CO level continuously from 9 ppm.\u003c\/p\u003e\n\u003ch2\u003eWhy It Matters\u003c\/h2\u003e\n\u003cp\u003eWorkplace CO limits are based on exposure over time, not a single reading. OSHA's limit is 50 ppm averaged over an 8-hour shift, and Cal\/OSHA's is 25 ppm. Cal\/OSHA has cited an employer after measuring 250 to 350 ppm inside an enclosed warehouse where employees had reported headaches and nausea for months.\u003c\/p\u003e\n\u003ch2\u003eHow the Pro-Tech 8505 Alerts You\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eCO Level\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eAlarm Activates\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e20 ppm\u003c\/td\u003e\n\u003ctd\u003eWithin 7 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30 ppm\u003c\/td\u003e\n\u003ctd\u003eWithin 3 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e45 ppm\u003c\/td\u003e\n\u003ctd\u003eWithin 90 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e90 ppm\u003c\/td\u003e\n\u003ctd\u003eWithin 15 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e180 ppm\u003c\/td\u003e\n\u003ctd\u003eAt any time\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eWhen an alarm activates, the red LED flashes and the 85 dB horn sounds four short beeps. These are the manufacturer's specified alarm points. Do not wait for an alarm if you suspect carbon monoxide exposure.\u003c\/p\u003e\n\u003ch2\u003eSee What Happened While You Were Away\u003c\/h2\u003e\n\u003cp\u003ePress Display Memory to see the highest CO level detected, how long it lasted and how long ago it occurred. The 8505 keeps 30 days of peak history and calculates an 8-hour time-weighted average.\u003c\/p\u003e\n\u003ch2\u003eSimple to Install\u003c\/h2\u003e\n\u003cp\u003eIt runs on one 9V alkaline battery, so there is no wiring and no electrician. Mount it on an interior wall about three inches above eye level, at least 5 feet from combustion or cooking appliances, and use one monitor for every 1,000 square feet of open space.\u003c\/p\u003e\n\u003ch2\u003eGood to Know\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFor heated and air-conditioned commercial buildings, 40°F to 100°F\u003c\/li\u003e\n\u003cli\u003eNot for vehicles, unconditioned spaces or hazardous locations\u003c\/li\u003e\n\u003cli\u003eNot listed to UL 2034 and not intended to meet building or fire code CO alarm requirements\u003c\/li\u003e\n\u003cli\u003eSensor life is 2 years; the manufacturer recommends replacing the monitor annually\u003c\/li\u003e\n\u003cli\u003eOne-year limited manufacturer warranty; made in Canada\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/8882\/9740\/files\/pro-tech-8505-owners-manual-2026.pdf?v=1794610839\" target=\"_blank\" rel=\"noopener\"\u003eDownload the owner's manual (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/section\u003e","brand":"Pro-Tech","offers":[{"title":"Default Title","offer_id":67864653431084,"sku":"8505","price":199.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/8882\/9740\/files\/protech-8505-fixed-v3.png?v=1794609751"},{"product_id":"pro-tech-8505-commercial-co-alarm-3-pack","title":"Pro-Tech 8505 Commercial CO Alarm 3-Pack, Covers Up to 3,000 Sq Ft","description":"\u003c!-- pt-banner --\u003e\u003cdiv style=\"width:100%;margin:0 0 20px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/8882\/9740\/files\/protech-8505-app-small-office-2000x750.jpg\" alt=\"Pro-Tech 8505 3-pack for small offices and shops - covers up to 3,000 sq ft of open space\" width=\"2000\" height=\"750\" style=\"display:block;width:100%;height:auto;\"\u003e\u003c\/div\u003e\n\u003csection class=\"protech-8505-description\"\u003e\n\u003ch2\u003eCoverage for a Small Shop, Office or Restaurant\u003c\/h2\u003e\n\u003cp\u003eThree Pro-Tech 8505 alarms cover up to 3,000 square feet of open space, following the manufacturer's guideline of one monitor per 1,000 square feet. That fits many small retail stores, offices and restaurants. You're responsible for everyone who walks through your door, and this pack puts a workplace-grade CO alarm in each main area.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e(3) Pro-Tech 8505 Commercial CO Alarms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhere to Put Them\u003c\/h2\u003e\n\u003cp\u003eThe 1,000-square-foot guideline is for open space with no walls. A back room, office or any room with a furnace, water heater or boiler may need its own alarm. Mount each one on an inside wall about three inches above eye level and at least 5 feet from cooking or fuel-burning appliances.\u003c\/p\u003e\n\u003ch2\u003eWhy Pro-Tech\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAlarms based on the workplace exposure limits set by OSHA, NIOSH, ACGIH and Cal\/OSHA, not the home-alarm standard\u003c\/li\u003e\n\u003cli\u003eShows the CO level continuously from 9 ppm\u003c\/li\u003e\n\u003cli\u003eRemembers the highest CO level, how long it lasted and when, with 30 days of history\u003c\/li\u003e\n\u003cli\u003e85 dB alarm with flashing red light\u003c\/li\u003e\n\u003cli\u003eRuns on one 9V battery each, so there is no wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor alarm levels and full details, \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/8882\/9740\/files\/pro-tech-8505-owners-manual-2026.pdf?v=1794610839\" target=\"_blank\" rel=\"noopener\"\u003edownload the owner's manual (PDF)\u003c\/a\u003e. For heated and air-conditioned commercial buildings, 40°F to 100°F. Not listed to UL 2034 and not intended to meet building or fire code CO alarm requirements.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"Pro-Tech","offers":[{"title":"Default Title","offer_id":67864654086444,"sku":"8505-3PK","price":599.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/8882\/9740\/files\/protech-8505-3-pack-main-1500.png?v=1794609791"},{"product_id":"pro-tech-8505-commercial-co-alarm-6-pack","title":"Pro-Tech 8505 Commercial CO Alarm 6-Pack, Covers Up to 6,000 Sq Ft","description":"\u003c!-- pt-banner --\u003e\u003cdiv style=\"width:100%;margin:0 0 20px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/8882\/9740\/files\/protech-8505-app-large-warehouse-2000x750.jpg\" alt=\"Pro-Tech 8505 6-pack for large offices and warehouses - covers up to 6,000 sq ft of open space\" width=\"2000\" height=\"750\" style=\"display:block;width:100%;height:auto;\"\u003e\u003c\/div\u003e\n\u003csection class=\"protech-8505-description\"\u003e\n\u003ch2\u003eCoverage for Larger Offices, Stores and Small Warehouses\u003c\/h2\u003e\n\u003cp\u003eSix Pro-Tech 8505 alarms cover up to 6,000 square feet of open space, following the manufacturer's guideline of one monitor per 1,000 square feet. That fits a larger office, a store with a stockroom, or a small warehouse. Staff, customers, delivery drivers and visitors all breathe the same air, and this pack spreads workplace-grade CO alarms across the whole space.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e(6) Pro-Tech 8505 Commercial CO Alarms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhere to Put Them\u003c\/h2\u003e\n\u003cp\u003eBuildings with several rooms usually need more than square footage alone suggests. Put alarms in the main open areas first, then in offices, break rooms, stockrooms and any room with a furnace, water heater or boiler. Mount each one on an inside wall about three inches above eye level and at least 5 feet from cooking or fuel-burning appliances.\u003c\/p\u003e\n\u003ch2\u003eWhy Pro-Tech\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAlarms based on the workplace exposure limits set by OSHA, NIOSH, ACGIH and Cal\/OSHA, not the home-alarm standard\u003c\/li\u003e\n\u003cli\u003eShows the CO level continuously from 9 ppm\u003c\/li\u003e\n\u003cli\u003eRemembers the highest CO level, how long it lasted and when, with 30 days of history\u003c\/li\u003e\n\u003cli\u003e85 dB alarm with flashing red light\u003c\/li\u003e\n\u003cli\u003eRuns on one 9V battery each, so there is no wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor alarm levels and full details, \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/8882\/9740\/files\/pro-tech-8505-owners-manual-2026.pdf?v=1794610839\" target=\"_blank\" rel=\"noopener\"\u003edownload the owner's manual (PDF)\u003c\/a\u003e. For heated and air-conditioned commercial buildings, 40°F to 100°F. Not listed to UL 2034 and not intended to meet building or fire code CO alarm requirements.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"Pro-Tech","offers":[{"title":"Default Title","offer_id":67864657396012,"sku":"8505-6PK","price":1199.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/8882\/9740\/files\/protech-8505-6-pack-main-1500.png?v=1794609817"},{"product_id":"pro-tech-8505-commercial-co-alarm-10-pack","title":"Pro-Tech 8505 Commercial CO Alarm 10-Pack, Covers Up to 10,000 Sq Ft","description":"\u003c!-- pt-banner --\u003e\u003cdiv style=\"width:100%;margin:0 0 20px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/8882\/9740\/files\/protech-8505-app-logistics-v2-2000x750.webp\" alt=\"Pro-Tech 8505 10-pack for distribution and logistics - covers up to 10,000 sq ft of open space\" width=\"2000\" height=\"750\" style=\"display:block;width:100%;height:auto;\"\u003e\u003c\/div\u003e\n\u003csection class=\"protech-8505-description\"\u003e\n\u003ch2\u003eCoverage for a Warehouse and Office\u003c\/h2\u003e\n\u003cp\u003eTen Pro-Tech 8505 alarms cover up to 10,000 square feet of open space, following the manufacturer's guideline of one monitor per 1,000 square feet. Fuel-powered forklifts and other equipment used indoors are a common source of workplace carbon monoxide, especially in winter when doors stay shut. This pack covers the warehouse floor and the offices around it.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e(10) Pro-Tech 8505 Commercial CO Alarms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhere to Put Them\u003c\/h2\u003e\n\u003cp\u003eSpread alarms across the open floor at one per 1,000 square feet, then cover separate offices, break rooms and any room with fuel-burning equipment. Mount each one on an inside wall about three inches above eye level, at least 1 foot from exterior doors and windows and never on an outside wall. The alarm is designed for heated and air-conditioned space from 40°F to 100°F.\u003c\/p\u003e\n\u003ch2\u003eWhy Pro-Tech\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAlarms based on the workplace exposure limits set by OSHA, NIOSH, ACGIH and Cal\/OSHA, not the home-alarm standard\u003c\/li\u003e\n\u003cli\u003eShows the CO level continuously from 9 ppm\u003c\/li\u003e\n\u003cli\u003eRemembers the highest CO level, how long it lasted and when, with 30 days of history\u003c\/li\u003e\n\u003cli\u003e85 dB alarm with flashing red light\u003c\/li\u003e\n\u003cli\u003eRuns on one 9V battery each, so there is no wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor alarm levels and full details, \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/8882\/9740\/files\/pro-tech-8505-owners-manual-2026.pdf?v=1794610839\" target=\"_blank\" rel=\"noopener\"\u003edownload the owner's manual (PDF)\u003c\/a\u003e. For heated and air-conditioned commercial buildings, 40°F to 100°F. Not listed to UL 2034 and not intended to meet building or fire code CO alarm requirements.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"Pro-Tech","offers":[{"title":"Default Title","offer_id":67864658018604,"sku":"8505-10PK","price":1999.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/8882\/9740\/files\/protech-8505-10-pack-main-1500.png?v=1794609843"}],"url":"https:\/\/codetectors.com\/collections\/pro-tech-commercial-co-alarms.oembed","provider":"COdetectors.com","version":"1.0","type":"link"}