In the modern arena of smart farming and agriculture, the Internet of Things (IoT) have the potential to act as a game changer by tracking plants’ need and soil health. IoT offers a broad variety of applications in the growth of precision agriculture, where the potential of sensor networks and cloud computing assist to address the difficult problems in farming. In this study, utilizing the integrated soil moisture and soil temperature sensors, we construct an ultralow power sensor node. The solution makes it possible to save data in the cloud for later use and to remotely operate an actuator from the cloud as well. Due to the use of MSP430G2553 based hardware, our solution is simpler, affordable, and more energy efficient than existing consumer electronic agro-devices. The actual use of our device – IoSIT is anticipated to result in an economical and energy-efficient sustainable irrigation system.