Strong Wireless Signal - Equipped with wireless transmitter, it features strong wireless signal penetration (433MHz frequency) and long transmission distance (30-100m/98-328ft in open air), the signal can be received timely and quickly within the transmission range. Upgraded Version HD LCD Screen - Indoor outdoor thermometer with visualized LCD screen, clear number and large bold numbers to be seen from far across the room, especially perfect for who is poor eyesight, like an elderly person. Multi-Functional Thermometer - displays indoor/outdoor temperature simultaneously and arrow trends for outdoor temperature. Press "C/F" button to switch F/C to display the temperature for your personality. (Outdoor Temperature:-30-50/-22-122; Indoor Temperature:0-50/32-122).
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