Self-adhesive window: the transparent temperature meter can be mounted on the exterior glass, you can read the outside temperature in the room Removable: the thermometer is removable, making recalibration easy to clean and recalibration No batteries required: without batteries, the thermometer is economical, environmentally friendly and can simply be attached to the window with a sticker Very precise bimetallic Sensitive: The transparent temperature monitoring meter incorporates highly sensitive precision bimetallic strips to record temperature change Tips: Please do not place the window thermometer under direct sunlight, light energy will be converted into internal energy, which increases the temperature. You can rotate the dial left and right to recalibrate in small difference in value. If the value difference is large in abnormal situation, please remove the back, there is a calibration screw, you can also recalibrate it indoor outdoor window thermometer Practical The transparent temperature monitoring meter can be mounted on an exterior window, you can read the outside temperature in the room. You can clearly know the outdoor temperature at home and change your fabric according to the displayed data, avoiding catching cold Waterproof The transparent temperature monitoring meter has a good waterproof function, which is not afraid of bad weather Durable The thermometer adopts 3mm thick acrylic as the dial and stainless steel as the shell chip, which is durable and wear-resistant Removable The thermometer is detachable, which is convenient for cleaning and recalibration Specification : Material: Acrylic + Stainless steel Color: transparent Measuring range: -40 - 50C (-40-120F)< /p> Accuracy: +/-2C Size: 11*2 cm/4.33*0.78 inch (D * H) Net weight: 80.1 g/2.83 oz