F2000ASC-CO2-5003 + F2000TSM-CO2-S301-N
Or F2000ASC-CO2-5030 + F2000TSM-CO2-S301-N

1) It's composed an inside sensor box and a outside controller. They connect through RS485 interface
2) Real time detection and control with LCD displays on the controller
3) Can be set CO2 level, humidity and temperature and provide buzzer alarm. Special provide altitude calibration and locking the operation buttons
4) Provide 3 x relay on/off outputs or 3X analog output
5) NDIR CO2 sensor from America GE/Telaire, with more than 15 years' lifetime of CO2 sensor
6) Self-calibration: ABC logic self calibration system of CO2 can be selected to turn off or turn on
7) Detection and control CO2 level selectable: 0 to 2, 000ppm until to 0 to 50, 000ppm
8) Humidity range: 5 to 95% RH; Temperature range: 0 to 50oC
9) Micro processor with quick response
10) PC/ABS flame retardant housing