Purchase Qty.: (Pieces) 1-10 11+ Huangdao Senweida Co., Ltd. Base Info Model NO.:ZNN-D6After-sales Service:YesWarranty:3 YearsTrademark:senxinTransport Package:WoodSpecification:500*400*280Origin:ChinaHS Code:9031809090 Description Pre:Core Holding Unit Next:Mini CO2 Meter with Infrared (NDIR) Sensor Gas Analyzers Carbon Dioxide CO2 Detector with Alarm Home School Hotel Indoor Use