Measurement Range Oxygen: 0 to 25 % O2
Measurement Range Hydrogen Sulfide: 0 to 30 ppm
Measurement Range Carbon Monoxide: 0 to 500 ppm
Indicating Accuracy Oxygen: +/- 0.5%O2
Indicating Accuracy Hydrogen Sulfide: 5% of full scale
Indicating Accuracy Carbon Monoxide: 5% of full scale

General Description:
Small / Compact size and lightweight with low power consumption Rugged construction, reliable long-seller model Remote control measurements available with an extension tube