|1||VCC||Sometimes connected trough switch|
|2||Thermistor||Typically NTC, 10KOhm, connected to GND|
|3||Clock||Clock and Data|
|4||Data||Exchange of 8-bit data|
|5||Switch||Optional, normally off, turns on when connected to GND|
Pins 1 and 6 are the opposite way round.
Thermistor is next to GND, switch is next to it ????