The Matrix WAMS-S1000 Permissible Wireless Carbon Monoxide (CO) Monitoring Sensor has been listed by Intertek, a US Nationally Recognized Testing Laboratory (NRTL). With this listing, the WAMS-S1000 fully complies with 30 CFR 75.351 set forth by the Mine Safety and Health Administration (MSHA) and is the only post-accident, performance-tested, and NRTL-Listed CO sensor on the market today, the company states. Read more