V&A CO2 Controller for Agricultural Application VAT921-CO2/VAT931-CO2 Environmental Products?
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Catalog excerpts

CO2 Controller For Agricultural Application VAT931-C02 Separated type sensor For monitoring and controlling indoor carbon dioxide concentrations, suitable for conservatories, greenhouses places. mushroom, grown room and other agricultural applications Color TFT LCD display with touch screen (VAT921-CCh) Separated type sensor install (VAT931-C02) USB interface and RS485 communication (Modbus protocol) 3 ways Relay output Analog output 4~20mA( Optional: 0-10V,0-5V,Please remark) Correspod time:CCh :,(T90) <60s;Temperature and humidity: 1/e(63%)change ,Slow flow rates <10s Input power 24V AC/DC • Dual window NDIR sensor

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