Oxygen, temperature and humidity transmitter is an integrated high-performance electrochemical oxygen sensors and precision of oxygen and temperature and humidity sensors to detect the environment temperature and humidity, the built-in temperature compensation, can accurate measurements of the oxygen concentration and temperature and humidity environment, using standard Modbus RTU R485 output, the convenient user use and debugging, greatly shorten the design development cycle of users.It combines electrochemical sensors and circuits perfectly to meet customers’ requirements for oxygen, temperature and humidity detection in the environment.