... Temperature and RH% Transmitting Real time C02 detection and transmitting CO2 -Real time C02 Monitor for Agriculrure ,Greenhouse With Temperature and ... : AC220/110V, 50Hz, DC12V or DC24VWorking condition: Tem: 0-50°C,Hum:≤95%RHResponse time:≤60sOptional output: RS485, 4-20mA, 0 ... .8-0.4V,Linear output, MAX232Protection grade: lP65 BX568 Portable CO2 Detectors