Tactacam Bluetooth Wind Sensor Real-time wind speed and direction data;On-demand wind readings through the REVEAL App;Continual, historical, and forecast wind data;Built-in E-compass for wind direction;user calibration required;Wind speed range: 0 to 55 mph;Wind speed accuracy: +/- 3 mph;Wind direction accuracy: +/- 22.5 degrees;Wireless connectivity distance: 50 ft;Compatible with REVEAL Pro 4.0, X 4.0, Pro 4.0 Solar, Ultra, Pro 3.0, X 3.0;Battery: 3 AA batteries;Operating time: Up to 1 year with 3 AA alkaline batteries;Operating temperature: -4 degrees F to 140 degrees F;Storage temperature: -40 degrees F to 185 degrees F;Dimensions: 2.95"x2.95"x4.76";Weight: 6 oz;Includes: Wind sensor, calibration bag, T-post mount;T-post not included;Additional subscription requiredtable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 4300 Product Group Code: 4300C Product Sub Group 1: 4300C4 Inactive: No