12C TypePortable oxygen meter features an optimized structural design, compact in size for easy carrying, and can be operated with one hand. Equipped withFull rangeImported Sensors0-5% tolerance with less than 0.1% error, featuring high precision, high sensitivity, and long-lasting durability.The design with adjustable lines makes sensor replacement more convenient. Suitable for environmental monitoring, laboratory testing, workshop inspections, tunnel monitoring, gas storage testing, chemical industrial gases, exhaust gas oxygen for internal combustion engines, and high oxygen concentration measurement for oxygen generators.