The wireless multi-function sensor developed by Swift Wireless is a device that integrates an IoT gateway with a variety of sensors. Optional liquid level, temperature, humidity, methane, hydrogen sulfide, carbon monoxide, oxygen (gas detection two out of four) function monitoring, monitoring data collection upload server, the establishment of ontology monitoring, environmental monitoring integrated solution. The wireless multi-function sensor can be equipped with an Internet communication module, which is used to upload the sensor data to the server regularly, and the on-site monitoring data can be viewed in the background of the website or the mobile phone APP. Users only need to install a single device in the detection environment to complete a variety of functional testing, sensors to complete the collection of data, upload data, without any setting operation. Another optional external independent sensor (such as: wireless temperature sensor, wireless displacement sensor, etc.) wireless ad hoc network communication, increase the monitoring function.