GY/VGD-200-CO-G (0-1000ppm) hydrogen resistance
GUOYUGRA GY/VGD-200-CO-G (0-1000ppm) Hydrogen Resistance, Carbon Monoxide Detector
NBCLab takes or designs pictures, and embezzlement is strictly prohibited
[Statement] The pictures are for users' reference. Due to product upgrading or shooting level, please refer to the real object