Product Description 1. Excellence in accuracy, safety, and durability 2. Possible conversion of 5 GAS (including NOx) 3. Automatic adjustment of preheating time / Measured value PAUSE function 4. Built-in printer / RS232 PC program QRO-401 Specifications 1. Measurement category: CO, HC, CO2, O2, , AFR, NOX (choice explanation) 2. Measurement principle: CO, HC, CO2 Non-dispersive Infrared type (NDIR)O2, NOx Electrochemical type 3. Preheating time: Approx. 2~8 minutes 4. Energy consumption: Approx. 50W 5. Size: 285(W) x 410(D) x 155(H) 6. Weight: Approx. 4.5 kg Application governmental agency’s use, inspection or repair of vehicle.