Ray-JrMALL Digital Thermometer Indoor Outdoor Weather Station MAX/MIN T, New Temperature Gauge LCD Digital Temperature Meter White Digital Indoor Outdoor Thermometer Weather Station MAX/MIN. Simultaneously measure indoor and outdoor temperature. Higher temperature range than other thermoeters: In-Range: -10C - 50C14F - 122FOut-Range: -40C ~70C-58F - 158FHigh Accuracy: 1C Temperature sensor: 2 m. 2 Meter Sensor Wire. Check the temperature around you evey mintue. Suit for many occasions: office, home, tour, car, train, cold storage, etc. small size, portable, ligtweight, easy to take it with you where you go. Temperature survey method 1. Press MAX/MIN key to measure the highest or lower temperature inside and outside the door. Press RESET key to remove the internal and exrenal temperature writen dowm quickly.