The ozone gas monitor is used for real-time monitoring of residual gases in the environme nt in various médical articles, médical consumables production units, pharmaceutical factori es, disinfection supply centers or operating rooms, and alarms when the concentration exceed s the standard. The gas monitor can monitor the residual gas concentration in the air in the rooiTL When the concentration reaches or exceeds the preset alarm threshold, the monitor will send out an audible and visual alarm. It can be used with gas remote alarm controllers or ex haust facilities such as fans. Linkage, promptly reminding operators to take safety measures to prevent explosion and poisoning accidents, so as to ensure the safety of life and propert y, it is the safety guarantee for the use of toxic gas sterilization equipment on site.