Wiring Instructions: Voltage power input ranges from 10V to 30V. When wiring the 485 signal cable, ensure correct A/B polarity. The wires must not be connected in reverse. Addresses for multiple devices on the bus must not conflict. The switch type device includes 1 relay output; the two outgoing wires (green and white) are normally open contacts.Alarm Reset Delay Setting D: If this value is set to 10S, if rain or snow is detected for more than 10S, the device triggers an alarm state. If detected for less than 10 seconds, the detection is ignored. Similarly, when rain or snow returns to normal state. Default: 1 second. Range: 0~60000 seconds.Sensitivity Setting: The sensitivity value is inversely proportional to the detection sensitivity. A larger setting value results in lower sensitivity. A smaller setting value results in higher sensitivity. Values that are too small may increase the risk of false alarms. Factory default values available. Default: 800. Range: 500-3500.Designed to meet IP68 protection rating, allowing operation in various outdoor environments including harsh conditions. Heating temperature can be controlled within 40 degrees Celsius (default) to prevent overheating. Sensor sensitivity is adjustable. Alarm and reset delay settings help manage frequency of alerts.Optional automatic heating function supports snow detection. In environments with long-term temperatures below 0°C and high humidity, it prevents icing condensation. Suitable for use in greenhouses, aquaculture, construction sites, and buildings where rain and snow detection is required.Specification:Item Type: Rain Snow SensorMaterial: Polyester PlasticsColor: As shown in the pictureSize: Approx. 9x6x4cm / 3.5x2.4x1.6inWeight: Approx. 161g / 5.7ozPower Supply: 10~30V DCNormal Working Power: 0.4WStorage Environment: -40 ~ 80Working Power When Heating: 2.4WOutput Signal: 485, relayParameter Configuration: Software settingsDefault Modbus Address: 01Support Function Code: 03, 06Heating Start Ambient Temperature: