High-precision 5-in-1 wireless weather sensor from AcuRite accurately measures temperature, humidity, wind speed, wind direction and rain (applies to product 1). Transmits sensor data every 36 seconds using 433 MHz wireless signal up to 330 foot (100 meter) range (applies to product 1). Display is compatible with any AcuRite 5-in-1 weather station sensor for monitoring conditions from multiple rooms (applies to product 2). Illuminated color display on add-on unit with manual and auto-dimming brightness plus 12 to 24 hour weather forecast (applies to product 2). Sensor requires 4 AA alkaline or lithium batteries (not included); display powered by 4.5V adapter or 6 AA batteries (not included) (applies to both products). Color white Shape Rectangular Frequency 0.03 Hz Brand Name AcuRite Style Name Sensor + Sensors Display Type LCD Manufacturer AcuRite Power Source Battery Powered Sensor Technology Ultrasonic Included Components Instruction Manual Temperature Accuracy +/- 1.1 degrees Celsius Are batteries included No Connectivity Technology 433 MHz Upper Temperature Range 60 Degrees Celsius