Description: This is a great， brand new indoor \/ outdoor thermometer hygrometer combination. The outdoor sensor comes on an about 6 ft (1.8m) long， thin wire. It can easily be routed through a window frame to measure outdoor conditions. Great to make sure you set your air conditioner to a comfortable temperature. It can also be used for science projects or terrariums. Specifications: Large LCD display simultaneously showing indoor !#!amp!*!amp; outdoor temperature indoor humidity Recording MAX\/MIN temperature and humidity value automatically Selectable temperature unit: C or F With back stand and hanging hole at back side Temperature Range: Indoor: 14.0 to 122.0 F \/ -10.0 to 50.0 C Outdoor: -58.0 to 158.0 F \/ -50.0 to 70.0 C Resolution: 0.1 C \/ 0.1 F Accuracy: +\/- 2 F or +\/- 1.0 C Humidity Range: 20% to 99% +\/- 5% relative humidity Accuracy: +\/-5% (for the 40 - 80% range) Memory: min\/max for indoor and outdoor temperature Dimensions: 110 x 58 x 18mm Clear display for easy reading Weight: approx 108g Battery: 1 x 1.5 Volt AAA (NOT included) Package Included: 1 x Digital Indoor Outdoor In\/Out Thermometer