【High Precision Sensor】Built-in highly sensitive sensor with rapid 5-second refresh rate ensures accurate and up-to-date temperature and humidity readings. 【Comfort Indicator】Facial expression icon changes based on indoor temperature and humidity, providing an intuitive understanding of comfort levels. 【Versatile Placement】Magnetic, stand, or wall-mount options allow for flexible positioning on desks, nightstands, or walls. 【Backlit Display】Soft backlight provides comfortable visibility in low light conditions, perfect for nighttime checks without disturbing sleep. 【Multi-functional Design】Large LCD screen displays time, temperature, and humidity, offering clear readings from multiple viewing angles. 【Dual Air Intake】Side vents ensure multi-directional air contact for precise environmental sensing and rapid response to changes. Specifications: Temperature Range: -50℃ to +70℃ (-58℉ to +158℉) Humidity Range: 10%RH to 99%RH Temperature Resolution: 0.1℃/℉ Humidity Resolution: 1% Refresh Rate: 5 seconds Power Source: 2 x AAA 1.5V batteries (not included) Dimensions: 6.1 x 7.3 x 1.9cm Material: ABS Mounting Options: Magnetic, stand, wall-mount