Multichannel temperature monitor on IoT

The objective of this study was design and construction of 4 channels temperature monitor via IoT system by using the compensate error sensor and microcontroller for measure the worker skin temperatures in occupational health field. This prototype composed of three parts: 1) the measurement part consisted of calibrated temperature sensors, 2) the processing part composed of NodeMCU 1.0 microcontroller work on Wi-Fi, and 3) the display part comprised of monochrome 0.96″ 128×64 OLED and displayed via IoT platform. The designed prototype give a good accuracy and easy to access.