illustrate: 1. The indoor digital hygrometer is ideal for monitoring temperature and humidity in the room of the elderly and children. Also great for pet and plant rooms. 2. The indoor digital hygrometer is the perfect companion to humidifiers and dehumidifiers. You can use a humidifier or dehumidifier to change the room humidity based on the humidity reading. Specification: Product Name: Indoor Digital Hygrometer.< /p> Material: ABS Color: Black Weight: about 70g Size: about 85.9 x 2.3cm/3 ,15 x 2.32 x 0.90 inch. Product List: 1 * Indoor Digital Hygrometer Comment: Due to lighting effects and shooting angles, there may be some color difference in the product, please understand. Due to manual measurement, there is a certain error in product size. Accurate MeasurementThe air thermometer provides temperature measurement between -4.0F to 158.0F (-20C~70.0C) with an accuracy of 0. 1F/C. The humidity measurement range is 10%-99% and the accuracy is 1% RH. Know Humidity IntuitivelyThe digital indoor thermometer displays the highest and lowest temperature and humidity records within 24 hours, meeting all your needs. Portable UseThe temperature and humidity monitor is small in size and lightweight, you can also easily put it in your pocket, carry it, travel it and use it in the car. Easy to use No only you can touch the bulb pattern button of the indoor thermometer, but also you can quickly turn on the backlight of the thermometer to easily read the room temperature WIDE APPLICATIONThe indoor digital hygrometer can be used as greenhouse thermometer, freezing thermometer, reptile thermometer or hygrometer, also suitable for baby and nature thermometer.