OSI-90 | Xtralis Dual-Wavelength Beam Smoke Detector for OSID Systems by HoneywellDescription The Xtralis OSI 90 is a dual ended optical smoke beam detector designed for large open area applications. Manufactured by Honeywell, this OSID Series device utilizes dual wavelength imaging technology to deliver early and reliable smoke detection while minimizing false alarms. Ideal for warehouses, atriums, and industrial facilities, the OSI 90 offers extended coverage, simplified installation, and superior environmental resistance.