ELTAKO Rain Sensor RS (20000087) – 24 V DC, IP65, Heated, Potential-Free Contact

The ELTAKO Rain Sensor RS is a robust precipitation detector engineered for reliable outdoor monitoring in building automation and smart home systems. Its conductive sensing surface immediately registers rainfall, while the integrated automatic heating element prevents false triggers from condensation or snow accumulation. A potential-free NO contact delivers a clean switching signal to connected controllers, making it an essential component for weather-dependent control of awnings, skylights, irrigation systems, and alarm functions.

Advantages

This sensor combines precision with durability: the UV-resistant plastic housing and IP65 protection ensure long-term operation in harsh weather. The sensitivity potentiometer allows fine-tuning to local conditions, and the M16 cable gland with screw terminals simplifies installation. With low power consumption (max. 100 mA at 24 V DC) and a wide operating temperature range from -25 °C to +55 °C, it performs consistently in diverse climates.

Suitable for

• Automatic control of awnings, blinds, and skylights
• Irrigation system shut-off during rainfall
• Weather station integration for smart home hubs
• Alarm systems detecting precipitation on sensitive surfaces
• Building automation projects requiring reliable rain detection

Key specifications

• Operating voltage: 24 V DC
• Current consumption: max. 100 mA (with heating)
• Output: 1 potential-free NO contact, max. 24 V DC / 1 A
• Protection class: IP65
• Operating temperature: -25 °C to +55 °C
• Storage temperature: -25 °C to +70 °C
• Detection principle: conductive surface
• Heating element: integrated, automatic
• Sensitivity adjustment: via potentiometer
• Housing material: UV-resistant plastic, pure white
• Connection: screw terminals, cable gland M16
• Mounting: wall mounting

Recommendations

For optimal performance, mount the sensor in an exposed location free from overhangs, and adjust sensitivity after initial installation. Use a 24 V DC power supply with sufficient capacity for the heating function in cold climates. Pair with ELTAKO actuators or controllers for seamless integration.