TPI 707 Digital Carbon Monoxide Analyzer is designed with a fast response time using advanced pump driven technology, MAX CO reading captures, stores and recalls up to 8 readings printable via IR port and elective A740 printer, 1 ppm sensitivity, and easy-to-use push fittings. The TPI 707 features an easy-to-replace, calibrate-able sensory, soft carrying case, protective rubber boot, and should strap.