Using method: This module outputs data via serial port. After connected w/ serial port, send output direction, for example, 0xA5+0x45+0xEA to module, module will output temperature data continuously; If you want to check, you can send 0xA5+0x15+0xBA to module; Module can return one temperature data each time you send; Check frequency should be lower than 10Hz, or you should use continuous output mode, ie. send direction of 0xA5+0x45+0xEA