Review on 3 Pack Combination Smoke and Carbon Monoxide Detector: Portable Battery Operated Fire & Co Alarm for Home and Kitchen by John Miranda

Many reviews have rightly complained that the batteries die after a modest amount of time. After looking at the batteries, I decided (without seeing the rating) that they were going to die soon. I replaced them all with good quality lithium batteries. I hope these continue. The comment that the flashing light is like a strobe light is a reasonable comment. I covered the light with black tape for what is installed in my bedroom. Helped reduce strobe, but not perfect.