【High Precision Measurement】Accurately measures indoor temperature from 0℃ to 60℃ (32℉ to 140℉) with a margin of error of ±1℃, and humidity from 10% to 90% with ±5% accuracy. 【24-Hour Temperature and Humidity Tracking】Displays the highest and lowest temperature and humidity values over the past 24 hours, providing comprehensive environmental monitoring. 【Switchable Temperature Units】Easily toggle between Celsius and Fahrenheit displays, with Celsius as the default setting for user convenience. 【Low Battery Alert】Features a low battery reminder function to ensure continuous operation and timely battery replacement. 【Versatile Placement Options】Equipped with a support stand on the back for tabletop use and a hanging hole for wall mounting, offering flexible positioning in any indoor or outdoor space. Specifications: Temperature Range: 0℃ to 60℃ (32℉ to 140℉) Temperature Accuracy: ±1℃ Humidity Range: 10% to 90% Humidity Accuracy: ±5% Temperature Units: Switchable between ℃ and ℉ Default Temperature Unit: ℃ Features: 24-hour temperature and humidity tracking, Low battery alert Mounting Options: Table stand, Wall-mountable Power supply: Thermometer: 2 x AAA batteries, Transmitter: 2 x AAA batteries (not include)