RKI CX-04 Personal CO/O2 Monitor

CX-04, Carbon Monoxide (CO) 0-2,000 PPM and Oxygen (O2) 0-25%, Alkaline Batteries with

CX-04, Carbon Monoxide (CO) 0-2,000 PPM and Oxygen (O2) 0-25%, Alkaline Batteries with Alligator Clip