Data logger autoclave is an instrument to record or monitoring temperature in the autoclave. This research aims to help in recording activity of temperature in the autoclave, so get it the valid informations or not valid a sterilization process because the sterilization process in autoclave can be achieved when the temperature is above the boiling point. The sensor section has a heat retaining material that can be used up to 250° celcius. The electronic systems were built from the microcontroller ATmega328 as main controller, PT100 as temperature sensor, and SD card as data storage. The performance test of Autoclave Data Logger module is done for 90 minutes with interval every 6 minutes for data storage on SD Card, by means of sensor inserted into autoclave. The result offield test showed in SD Card that The range error is 3%. Comparison of data temperature module TA Data Logger Autoclave with Autoclave Still within the tolerance threshold and show that the module is worth it.