The WS Series of compact weather sensors are designed and developed with corrosion-resistant polycarbonate materials, with a solid structure for use in weather monitoring in power transmission stations, agro-meteorology, urban environmental monitoring. The WS sensors are maintenance-free with no moving parts, light-weight and cost-effective for its durable measuring performance. User’ s selectable choice of parameters to suit required applications. With its built-in data pre-processing capability and universal interface and selectable output protocols, make the sensors easy to use, install and integrate into 3rd party systems. Option for analog outputs is available. Features . Measures rainfall using piezoelectricity or photoelectricity principles . No moving parts . Can output minute, hour, day of rainfall . Maintenance free . No on-site calibration required . Analog output is optional