Wiring Instructions: Voltage power input can be 10~30V. When wiring the 485 signal cable, pay attention to the A/B. The two wires cannot be connected in reverse. The addresses between multiple devices on the bus cannot conflict. The switch type device comes standard with 1 relay output, and the two outgoing wires (green and white) are normally open contacts. Alarm Reset Delay Setting Ddescription: If this value is set to 10S, if the rain and snow are detected for more than 10S, the device will detect that the device has detected rain and snow and output an alarm state. If the rain and snow are detected for less than 10 seconds, the device does not consider it to be detected. To the rain and snow; when the rain and snow return to normal state, the same reason. Default: 1 second Range: 0~60000 seconds Sensitivity Setting Description: The sensitivity value is inversely proportional to the actual sensitivity. The larger the setting value, the less sensitive the device detection is. The smaller the sensitivity value is, the more sensitive the device detection is. However, it should be noted that the sensitivity value is too small and it is easy to cause false alarms. It is recommended to use the factory default values. Default: 800 Range: 500-3500 IP68 protection grade design, can work outdoors for a long time, easy to use, suitable for a variety of harsh site environment. The temperature of heating should be controlled within 40 (default) to prevent peroxidation caused by dry burning and prolong the service life. Sensor sensitivity adjustable, more flexible use. Alarm and reset delay can be set to avoid frequent alarm on site. Optional automatic heating function, can be used for snow detection, in the case of long-term below 0 and high humidity environment, to prevent icing condensation. Can be widely used in the environment, greenhouse, aquaculture, construction, buildings, such as the existence of rain and snow qualitative measurement, safe and reliable, beautiful appearance, easy installation. Specification: Condition: 100% Brand New Item Type: Rain Snow Sensor Material: Polyester Plastics Color: As shown in the picture Size: Approx.9x6x4cm/3.5x2.4x1.6in Weight: Approx.161g/5.7oz Power Supply: 10~30V DC Normal Working Power: 0.4W Storage Environment: -40 ~ 80 Working Power When Heating: 2.4W Output Signal: 485, relay Parameter Configuration: Software settings Default Modbus Address: 01 Support Function Code: 03, 06 Heating Start Ambient Temperature: 15 (default) Maximum Heating Temperature: 40(default) OutputRelay with Load Capacity: 250VAC 1A/30VDC 1A