Carbon Dioxide Monitor/Controller With The USB Data Logger The monitor/controller is special design to monitor and alarm CO2 level, also provides one on/off relay output to control a fan or a CO2 generator. An data logger is designed inside, which can record CO2 measurements more than 115 days and can be saved the data via a USB disk. The memorial CO2 monitor/controller not only very easily to be used as a CO2 monitor and controller, but also as a recorder of the measurements. Application in schools, kindergartens, office buildings, greenhouses and so on. Real-time monitoring carbon dioxide (CO2) measurements during 0ppm to 20,000ppm range alternative a ventilator and a CO2 generator An internal data logger is used to record CO2 Optional real-time monitoring temperature from measurements as well as optional temperature and -20℃ to 60℃ and relative humidity from 0 to Non-dispersive infrared (NDIR) CO2 sensor with self calibration, 15 years lifetime The 3-LED indicator lights indicate three CO2 LED lights brightness adjustable Post the data from the internal memorizer by any USB Easy preset CO2 level for buzzer alert (optional) Provide the software to preset the sampling time, read and record CO2/temperature&RH levels on PC measured ranges With super large capability memorizer, it can save Provide 1X On/Off dry contact output to control disk, and copy the data to a PC Sensing element Non-Depressive Infrared Detector (NDIR) 0~5000ppm 0~20,000ppm or 0~50,000ppm optional ± 40ppm + 3% of reading (0~5,000ppm) ± 75ppm or 10% of reading whichever is greater (0~20,000ppm or 0~50,000ppm) <2% of FS over life of sensor (15 yr typical) Calibration interval ABC Logic Self Calibration Algorithm CO2 setting & Display resolution Pressure Dependence Can be preset the altitude by the end users to eliminate the pressure influence via a inside software Temperature& RH sensor (optional) Combined digital temperature and relative humidity sensor Temperature measurement range

Humidity measurement range Option: 1X dry contact output Rated currency for contact point: 2A 220VAC/30VDC, resistance load Operation condition Power supply 24VAC/VDC ± 10% wiring connection Or with a power adaptor of 24V/230V or 24V/110V Connections Interface Locate in interface of connection Installment standard Wiring standard Approval Standard Buttons and internal DIP switches Preset the sampling alternation during 60s to 1h. The general maximum day of the data record is 115 days Outputs date is in .txt format USBDataGather software is for stand-alone application. It’s used to set parameters...

Tongdy Control Technology Operation Panel Have- File- Director? X-Asis Label Y-Asis Label !! Switch Vi 7] View Curve n Start |7] 3nd Report Label Kove Curve Curve Info ffav= File List Pile List Record Mode | Unchanged TJ Record Temp. (unchanged ^ Unchanged Temp. Unit Adjust System Time \~ Create Configuration File j IAE Em. . . | !g| j+gS | Q Please | lg] . . |^^Tia.. | lg] C02 Bo. . . ||*>U5BD*t. . . J | © | f | •fl^H^ 14:03 Kave File Director? lave File List USED at aGatherZO 10-11-04-1409 - VEM.T O Zero Indea [H] WeekDar S.-Asis Label V-AEIS Labe I |7] View Curve II |?] Start Hud I Switch...

Operation Panel ffava- File- Directory Sav= File List Isve File List O Zero Index O WeekDay T-Aris Label Report Label Irfc ";nfi£i;ret TTave File Directory ISTO File List IT] Zero India. I~~ KeekDay F Record Indta r Time X-Asis Label Y-AiiB LateL View Teat Switch View Keoort Label Hove Curve Curve Info ^ IAR Em . | =| | ^WORK ) | li] fgjEflt - | ^ -5 Ti a. . | C02 Mo. . 11 .* USBEat. . . ] M | © | ? | 14:C Add: Building #8, Courtyard #9, Dijin Road, Haidian District, Beijing, 100095, China

Model Guide item model Option -TH 3 (postfi for above items) CO2 Detector&Monitor with LCD display, 3 LED lights indicates CO2 levels range. Data logger records CO2 measurements with a USB disk to move the data to a PC. Power supply: 24VAC/VDC CO2 Monitor&Controller with LCD display, 3 LED lights indicates CO2 levels range. 1X relay On/Off control output. Data logger records CO2 measurements with a USB disk to move the data to a PC. Temperature and RH monitoring and data recordering option for above items.