SM3991B RS485 Carbon dioxide, illumination, temperature, hu

SM3991B RS485 carbon dioxide, light, temperature, humidity sensor integrated sensors for the RS485 bus, a dedicated sensor for environmental monitoring process of agricultural production and design, built-core sensors for all imported devices. Instruments capable of continuously monitoring the concentration of carbon dioxide gas, light intensity and ambient temperature and humidity air pressure and other five kinds of environmental parameters, each parameter value is converted to a standard MODBUS-RTU RS485 signal transmission to the associated equipment.

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