... &*Version*=1&*entries*=0Xi'an Hua Fan Instrument Co.,Ltd is one of the leading 12 portable gas ... welcome to buy or wholesale gas alarming detectors, CO detector, carbon monoxide detectors made in China from ... to transmit data to the computer; with PC software can be further analysis; can set up emergency alarm ... (O2), gas (EX), poisonous and harmful gases (CO, H2S, NH3, CL2, etc.)Response time: ≤30s(O2 ...