It is necessary to increase rainfall monitoring spatial distribution in urban areas to improve stormwater management and urban flooding forecast. However, the large-scale deployment of conventional rainfall monitoring instruments is costly. This abstract presents the implementation and test of a low-cost rainfall monitoring station. The objective is to evaluate the performance and reliability of these low-cost instruments in comparison with conventional instruments installed on the same site. Tests have shown that the designed systems can operate autonomously in the field and report measured quantities (timestamp, precipitation, output voltages) every minute. However, the low-cost optical rain gauge RG-15 has significant sensor to sensor variation and the collecting funnel of the low-cost tipping bucket rain gauge WH-SP-RG needs to be improved before installation.