Features 1、High Accuracy: Adopting 32 bit microprocessor, coupled with high speed and high accuracy processing circuits, to achieve fast and accurate measurement. 2、With USB Interface: Reserve a USB interface externally, use a USB cable to communicate with the computer, and achieve data export and deletion. 3、Clear in Display: 3.5in TFT color display with a resolution of 480 x 320, and function instructions for easy operation. Also equipped with buttons for easy parameter viewing, setting, and other operations. 4、Easy Operation: Full range temperature digital compensation. By modifying the coefficients, switching between different units can be achieved, such as ppm and mg/m³. 5、Data Storage: Can store 100,000pcs historical data and 1,000pcs alarm records. The storage interval of historical data can be freely set and has the function of switching display between Chinese and English. Specification Item Type: Nitric Oxide Detector Shell Material: PC Protection Level: IP65 Accuracy: ≤ ± 3% F.S Units: Ppm, ppb, mg/m3, ug/m3,% VOL,% LEL, etc. Working Environment Temperature: -20~50 ℃ Working Environment Humidity: 10~95%RH, non condensing. Data Interface: Mini USB, trapezoidal interface, integrated with charging interface. Charging Interface: 5V DC, integrated with data interface. Battery: 1 x rechargeable lithium battery, 5400mAh. Shipped with built in battery. Detection: With pump suction pipe, and the pump speed can be finely adjustable. Package List 1 x Nitric Oxide Detector 1 x Detection Head 1 x USB Cable 2 x Key 1 x Storage Box 1 x User Manual