KleerTemp Easy To Read Low Vision Thermometer utilize's Electrostatic technology to make the Kleertemp thermometer cling to the window, no mounting necessary. They are Accurate and semi transparent, the large bold easy to read numbers and transparent backlit design from daylight make is so it can be seen from across the room, very popular thermometer for those with low vision. Great Thermometer for homes, offices, apartments, RV's and Boats! Two Models Available Fahrenheit & Celsius models. Makes a Great Gift for anyone with vision issues or who loves knowing the temperature. -Peel KleerTemp cling carefully from package. -Clings to glass-Gently press cling on to cleaned glass. -Easy to move and very easy to read thermometer All KleerTemp models show both (Fahrenheit & Celsius), however primary scale is larger on each specific model. Original Kleertemp Comes in Both Fahrenheit & Celsius models.