Features:

• Cable-free, radio-frequency thermometer; tracks temperatures at up to 3 remote sensors
• Base has LCD screen; can set temperature range limits, program alarms, recall recent highs and lows, and track temperature trends
• Sensor can be stationed up to 100 feet away; sends signals every 30 seconds
• Kit includes main unit and 1 remote sensor; optional Centigrade scales
• Main unit is 4.6 by 4.21 by 0.98 inches; remote sensor is 4.16 by 2.83 by 0.88 inches

Editor Reviews:

Product Description:
Know the temperature from up to three remote locations Now you can know the temperature outdoors from the comfort of your home or office. This wireless thermometer monitors the temperature in up to three remote locations. The jumbo LCD screen makes it easy to monitor the weather indoors and out with a sensor transmission range of up to 100 feet. Just press a button and you can see the high and low temperatures from each location on a daily basis. - Monitors temperature in up to three remote locations - Temperature trend indication - rising, steady or falling - Remote sensor transmission range of up to 100 feet - Large display with 2 jumbo LCD digits - Minimum and maximum temperature memory - Outdoor temperature range from -4F to 140F - Remote sensor to main unit transmission frequency of 433 MHz - Includes one THR128 sensor Specifications Optional sensors: THC138 and THN 138 Batteries:2 AA (main unit) and 2 AA (remote sensor)

Rating : - Great
I got this as a father's day gift for my dad and he loves it. He attached the outside sensor out on the deck and he says it works great.