Stay aware of your surroundings with the PROTMEX PTH-21D Portable CO Detector, a convenient 3-in-1 monitor that measures carbon monoxide, temperature, and humidity. Its clear LCD display shows CO levels from 0–1000ppm, while the built-in buzzer and light indicator provide alerts when attention is needed. With a 1000mAh rechargeable battery, USB Type-C charging, and a compact portable design, it’s a handy environmental monitoring tool for camping, RVs, travel, vehicles, workshops, and home use.
