Air Monitor Gas Monitor Cotroller, CO2 Temp Rh PAR Monitor manufacturer / supplier in China, offering Precision Emf (Electromagnetic Fields) Detector for Safer Living Spaces, Portable CO2/Temperature Monitor with Dual- Beam Ndir Sensor for Air Quality Detecting of School and Hospital and Restaurant, CO2/Temperature Monitor with Dual- Beam Channel Ndir Sensor and LED Display for Greenhouse and Indoor Plants. and so on.