Specifications include, but are not limited to: Item 1 Campbell Scientific Weather Station for D2 Castle Butte Station must have: Total of two (2) sensors, wind and temperature, data logger, power supply and mounting hardware. Data Logger CR1000X-NA-ST-SW-CC Temp Sensor EE181-L Temp Sensor Shield RAD10E 10 Plate Solar Radiation Shield for Large Sensors Anemometer 05108-45-L Wind Monitor - HD, Alpine Version Item 2 Campbell Scientific Weather Station for D2 Powell Station must have: Total of (two) 2 Sensors temperature, snow depth, data logger, power supply, mounting tripod and mounting hardware. Data Logger CR1000X-NA-ST-SW-CC Temp Sensor EE181-L Temp Sensor Shield RAD10E 10 Plate Solar Radiation Shield for Large Sensors Solar Panel SP50-L 50 W Solar Panel Battery and Charger PS84-SR-TM 84 Ah Power Supply with 14 x 16 in. Enclosure with Sun Saver Regulator and Tower Mounting Item 3 Campbell Scientific Data Loggers for D3 Fox Trail, Canyon Creek, Banner Summit, stations upgrade Total of three (3) Data Loggers CR1000X-NA-ST-SW-CC