Major Safety has been in the business of providing quality gas detection and safety equipment for over 30 years. We are committed to providing you with knowledgeable sales and service of quality equipment ranging from reflective vests and earplugs to engineered fall protection systems and various h2s monitors. H2s monitors are available in a variety configurations, depending upon which h2s monitor you order. We understand the importance of safety, so when you talk to us you can be assured that we never consider it a bother to meet your needs, so feel free to contact us TOLL FREE at 800-446-8274 or email sales@majorsafety.com to discuss the exact h2s monitor you require!