TOPTES Guard-101 4 gas monitor review – gas safety in your hand

REVIEW – You’ve probably heard that carbon monoxide (CO) is “the silent killer” as it is colorless and odorless. You can get carbon monoxide detectors for the home, but what about something portable? I got a chance to check out the TOPTES Guard-101, a 4 gas monitor that fits in the palm of your hand. […]