Description
CDY-20B Optical Rainfall And Illuminance Sensor
This 2-in-1 optical rainfall & illuminance sensor integrates rainfall detection and light intensity monitoring in one device. It features no moving parts, high precision, fast response and IP65 waterproofing, ideal for outdoor weather stations, smart agriculture, environmental monitoring and IoT systems.
Dimnsion & Mounting

Application
Smart Agriculture & Greenhouse Monitoring
Monitors rainfall and light intensity to optimize irrigation, lighting control, and crop growth management, improving yield and resource efficiency.
Weather Stations & Meteorological Monitoring
Provides accurate real‑time rainfall and illuminance data for professional weather stations, environmental monitoring systems, and meteorological research.
Smart City & Urban IoT
Used in road weather monitoring, smart streetlights, flood prevention systems, and urban environmental monitoring for safer and more efficient city management.
Solar PV Systems
Combines light and rainfall detection to support solar panel cleaning, power generation prediction, and intelligent operation and maintenance.
Environmental Monitoring & Forestry
Suitable for ecological monitoring, forest protection, and water conservation projects by tracking natural rainfall and sunlight conditions.
Industrial Automation & Outdoor Equipment
Integrated into outdoor automation equipment, security systems, and telecommunication base stations for environmental awareness and protective control.