This is the pin compatible upgrded version of the ESP-01 chip.
ESP8266 is a highly integrated chip designed for the needs of a new connected world. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor.
This is a splittable 40 pin dual male jumper wire, it is super flexible, can be transformed from 1-40 pin jumper wire. With some of these, you will no need to worry about the jumper wires you got before do not fit your project, just split it and go.
This is a digital temperature sensor, that is already calibrated. The measurement is done where the sensor is, no need for long insulated wire or complicated ADC design.
This sensor is therefore also perfect for use with a Raspberry Pi, as it is not analogic, all the data is transmitted in digital One Wire protocol.