PRO-LAB CA101 is a carbon monoxide test kit that can be used to detect the presence of carbon monoxide gas in your home, garage, car, or other enclosed space. The kit includes a plastic badge with a sensor button that changes color when exposed to carbon monoxide. The sensor button will turn gray or black within 15 minutes if carbon monoxide is present. The kit also includes a reusable sensor button that will last up to 6 months.

To use the kit, simply remove the sensor button from the foil package and snap it into the hole on the front of the plastic badge. Write the date you started testing on the lower right-hand corner of the front of the plastic badge. Peel the protective coating off of the adhesive on the back of the plastic badge and mount it to any hard, flat surface in the area of concern.