Product review (5 stars): AcuRite 00611A3 Wireless Indoor/Outdoor Thermometer and Humidity Sensor
Absolutely impressed.  The AcuRite 00611A3 Wireless Indoor/Outdoor Thermometer and Humidity Sensor is easy to set up and so far it has been dependable.  I put the monitor in my dining area and put the sensor outside in a shaded area to get accurate heat readings all the time.  The monitor is about 6-inches in height and easy to read from 10 feet away.