The Suite Represents The Three Core Components Of Weather Measurement: Wind Speed, Wind Direction, And Rainfall. It Uses A Sealed Magnetic Reed Switch And Magnet, So You Need To Supply Voltage To Make Any Measurements. All Sensors In The Weather Gauge Kit Are Passive Components. This Means You Need A Voltage Source To Measure Anything. Sensors Include Wind Vane, Cup Anemometer, Dumping Bucket Rain Gauge. Solar Powered Wireless Home Weather Station Outdoor Transmitter Function 1. Wireless 433mhz Transmission, Transmission Distance Of About 100 Meters 2. Outdoor Humidity Range From 20% To 99%, Resolution:5%. 3. The Outdoor Temperature Range Is -40C To +60C,And The Resolution:1 4. Wind Speed And Direction Transmission:Wind Speed Range From 0 To 50m/S;Wind Direction E,S,W,N,Se,Ne,Sw,Nw Eight Directions 5. Rainfall Transmission:The Total Rainfall Is 9999 Mm 6. Low Voltage Detection:When Low Voltage Occurs,The Receiver Symbol Flashes 7. Power Supply Mode:Alkaline Rechargeable Battery 2xAa 1.5v,Solar Energy 8. Waterproof Grade:IPX3 Name:Professional Weather Station Indoor Temperature:0-50 Outdoor Temperature:40-60 Temperature Accuracy:1.0 Humidity Range:20%-90% Humidity Accuracy:5% Rainfall Range:0-9999mm Air Pressure Range:750hpa-1100hpa Receiver:3xAA 1.5V LR6 Alkaline Batteries(Without Batteries,You Need To Pair The Corresponding Type Of Batteries Yourself) Transmitter:1.5V 2xAA Alkaline Batteries(Solar Transmitters Use Rechargeable Batteries)(Without Batteries,You Need To Pair The Corresponding Type Of Batteries Yourself) Battery Life:Base Station At Least 12 Months,Remote Sensor At Least 24 Months Colour:Gray-Black Material:ABS Size:18.9x12.5x2.7cm Package Contents: 1 Set * Weather Station essories 1 * Temperature And Humidity Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.