Established in 1983, Otis Instruments, Inc. has been an international force in gas detection for more than 25 years. Now on the forefront of a WireFree (wireless) breakthrough, Otis Instruments has once again proven its adherence to reliability and innovation.

Founded on a commitment to quality customer service, this Texas-based company has been on a narrow path to "building a better mousetrap" since its dawning.

As the manufacturer of the Solid State H2S Sensor--a product that changed the Oil and Gas Industry during the early 80`s--Otis Instruments has defined leadership while heightening the expectations of an industry.

What We Do:

Otis Instruments is a manufacturer of wired (4-20mA) and WireFree gas detection (and monitoring systems) for toxic, combustible, oxygen, and carbon dioxide gases. Our traditional products are fixed gas detection systems that are wired and modbus-based.

Since 2005, we have been specializing in WireFree gas detection--an Otis-exclusive long-range self-contained battery-powered gas detection product line that is industry-certified and suitable for both domestic and international markets.

Otis Instruments also provides: sirens, lights/strobes, calibration equipment, product training for explosive atmosphere environments, as well as various other products and services for a variety of safety needs.

Otis - Model OI-6940 Quad XP - Battery-Powered Explosion Proof 4-Gas Sensor Assembly - Operation Manual