This dissertation is to produce data logger for remote system. It consists of a temperature sensor for constantly monitoring temperature and Zigbee module for wireless data transfer at short distances. The measured temperature parameter will be sent to microcontroller system. And with the help of Zigbee module temperature is sent to computer from remote area on digital displays. In recent time is sent with the help of inbuilt RTC which ARM7 (LPC2148) microcontroller system has got. There will also provision for setting of RTC time if user required in any case and it is done with the help of remote computer. When microcontroller circuit power up then user is ask to set RTC time after this data transfer take place continuously which appears on computer via Zigbee module connected to computer.