Pro-Tech 8505 Commercial CO Alarm 3-Pack, Covers Up to 3,000 Sq Ft
Regular price $599.85
Coverage for a Small Shop, Office or Restaurant
Three 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.
What's in the Box
- (3) Pro-Tech 8505 Commercial CO Alarms
Where to Put Them
The 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.
Why Pro-Tech
- Alarms based on the workplace exposure limits set by OSHA, NIOSH, ACGIH and Cal/OSHA, not the home-alarm standard
- Shows the CO level continuously from 9 ppm
- Remembers the highest CO level, how long it lasted and when, with 30 days of history
- 85 dB alarm with flashing red light
- Runs on one 9V battery each, so there is no wiring
For alarm levels and full details, download the owner's manual (PDF). 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.


