Abstract: “One of the soil conditions that affect the development of a plant and crop production is the soil moisture. Therefore, it is necessary to monitor this property with multi points and real time of observation around the plant environment. In this research, it had been designed and tested a multichannel soil moisture measurement system with the wireless communication system. The system consists of transmitter and receiver blocks using soil moisture sensors as a soil moisture detector and microcontroller media in both blocks as the overall control of the measurement system. The measured result data is observed directly through the PC display. Laboratory scale testing is done as calibration process of the output voltage from sensor to soil moisture. The soil moisture 14.45 %; 19.92% and 26.73% comparable to 4.71 volt; 4.13 volt and 3.06 volt output voltage respectively. While the resistance values of each humidity were equal to 170.87 kΩ; 49.49 kΩ and 16.36 kΩ. The whole system test is d”

Keywords: Soil Moisture, Transmitter, Receiver, Multichannel, Microcontroller.