# jeonghoonkang

op = serial.openSerial('/dev/ttyUSB0', baudrate=38400, rtscts=True)

# jeonghoonkang

# http://www.eltsensor.co.kr/products-by-gas/co2/ndir/monitor?tpf=product/view&category_code=101012&code=22
op = serial.openSerial('/dev/ttyUSB0', baudrate=38400, rtscts=True)

Update co2_elt_mt200.py