Practical: The transparent temperature monitoring meter can be mounted on a windowpane outdoors, allowing you to read the outdoor temperature from inside the room. This helps you clearly understand outdoor conditions and adjust clothing accordingly to avoid getting cold. Waterproof: The transparent temperature monitoring meter has a good waterproof function, making it suitable for various weather conditions. No battery requirement: The transparent temperature monitoring meter features a built-in highly sensitive precision bimetallic sensor to detect temperature changes. Without the need for batteries, the thermometer is economical, eco-friendly, and can be installed on the window using an adhesive sticker. Durable: The thermometer uses 3mm thick acrylic for the dial and stainless steel for the chip housing, ensuring durability and resistance to wear. Detachable: The thermometer is detachable, making it convenient to clean and recalibrate. Scope of application: The temperature monitoring meter is practical during winter when there is a significant difference between indoor and outdoor temperatures. It is durable enough to be installed on external transparent windows or door sides. Usage: Clean the exterior surface of the glass window or door. Remove the protective paper from the adhesive sticker located at the center of the unit. Place the thermometer on the outside surface of the window or door glass. If cleaning or recalibration is needed, the main body of the thermometer can be removed from the plastic mount on the glass. Type: Transparent temperature monitoring meter Measuring range: -40 to 50 Celsius Accuracy: +/- 2 Celsius Color: Transparent Material: Acrylic Size: Diameter: approximately 11cm Package Contents: 1 x Transparent temperature monitoring meter Note: Light reflection and differences in display screens may cause slight variations in the color of the item shown in the picture compared to the actual product. Measurement error allowance is +/- 1-3cm.