The Falcon550 series portable multi-gas detector, independently developed by Xinzhi Sensing, can simultaneously measure 1-5 combustible and toxic gases. It uses imported industrial-grade sensors with a typical T90 response time of less than 15 seconds. It can operate continuously for over 24 hours on a single charge. It has an alarm volume greater than 95dB @ 30cm. It has an IP67 protection rating and an explosion-proof rating of Exdib II CTI4.