BH-4S Portable 4-Gas Monitor (SO₂, CO₂, O₃ & NO)

The BH-4S Portable 4-Gas Monitor is a professional-grade multi-gas detection device designed to continuously track Sulfur Dioxide (SO₂), Carbon Dioxide (CO₂), Ozone (O₃), and Nitric Oxide (NO) in demanding environments. Featuring real-time monitoring and high-precision sensors, this compact detector ensures early warning capabilities with vivid audible, visual, and vibration alarms. It is ideal for industrial safety inspections, environmental monitoring, emissions testing, confined space entry, and chemical plant safety. Built with a rugged, dust-proof, and water-resistant housing, the BH-4S provides fast and reliable data to ensure strict occupational health and safety compliance and protect personnel from hazardous gas exposure.