The Ambient Weather WS-1900A is identical to our best selling WS-2902A, but does not include any internet connection or access. The WS-1900 allows you to monitor your home and backyard weather conditions with the brilliant, easy-to-read LCD color display. Monitor indoor and outdoor conditions, including wind speed, wind direction, rainfall, UV, solar radiation, barometric pressure, indoor/outdoor temperature (F and C), indoor/outdoor humidity, and more. The weather station also calculates dew point, wind chill and heat index. <br><br> The wireless sensor array connects to the console via RF (915 MHz) up to 330 feet line of sight in open air (100 feet under most conditions). The wireless signal will not pass through solid metal, earth, or ground. The sensor array's primary power source is a solar panel which charges the super capiator, with optional battery backup (batteries ntot included). The sensor array mounts to any pole between 1 and 2" diameter with adaptive mounting bracket and U-Bolt design can be tightened to your mounting pole (not included). <br><br> <b>Specifications:</b> <li>Indoor Temperature Range: 14 to 140 °F <li>Outdoor Temperature Sensor Range: -40 to 149 °F <li>Indoor Humidity Range: 10 to 99% <li>Outdoor Humidity Range: 10 to 99% <li>Barometric Pressure Range: 8.85 to 32.50 inHg <li>Solar Radiation (Light) Range: 0 to 200,000 Lux <li>Rain Range: 0 to 394 in. <li>Wind Direction Range: 0 - 360º <li>Wind Speed Range: 0 to 100 mph