Protech 8505

Best ProTech 8505 Commercial CO Monitor. When a chronic CO level of 30ppm or more is detected, a flashing Red LED and 85db pulsating alarm are activated.Pressing the reset button temporarily mutes the audible signal while the CO level is rechecked This CO monitor is not listed or tested to the residential UL 2034 standard The monitor Protech 8505 is intended for use in commercial applications. Continuously displays current CO level detected from 10-500ppm Records and displays highest CO level detected, duration and how long ago occurred ... Learn more »

Protech 8505 Review: ProTech 8505 Commercial CO Monitor. I bought this from Amazon about 2 years ago. I was concerned that our relatively new house might have carbon monoxide issues. Since the alarm never went off, and rarely showed a number over 0, I felt good that the house is safe. If you buy this, know that the warranty is for one year. Also know that after 2 years, the "carbon sensor" will begin to fail, and that the manual states it's not responsible for monitoring beyond the first year. So if you need a long-term ... Read more »

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