The amount of output power generated by the solar module is strongly influenced by several environmental conditions. Where the solar module is strongly influenced by several parameters such as temperature, intensity of sunlight and the direction of sunlight. Monitoring the output parameters of the solar module is very necessary to assess the potential of the solar module on changes in the intensity of sunlight. Monitoring is carried out in real time using the Data Acquisition System (DAS). Data Acquisition System (DAS) is a monitoring system device that has the ability to monitor the work of solar modules with a high level of accuracy. Solar module measurement data in the form of current, voltage, temperature and radiation parameters will be stored in the database and will be displayed on the website. From the measurement results obtained a comparison between measurements using the watershed system with manual measurements. For the solar irradiation parameter, the error percentage is 4,24% and for temperature error percentage is 3,54%. Then for the Open Circuit Voltage (Voc) parameter, the error percentage is 4,04%. For the load voltage parameter, the error percentage is 0.69% and the error percentage is the ratio of the load current to the 39Ω resistance value of 4,54%. And the percentage of error for power parameters using DAS and manual measurements is 3.83%.