This LCD digital temperature humidity meter which can display indoor/outdoor temperature and humidity simultaneously, is great for home use. It is suitable for desktop placing or wall hanging. Large LCD display, you can easily read the value. Accurate measurement for measuring indoor & outdoor temperature and humidity. Features: Display indoor & outdoor temperature and humidity at the same time with / temperature unit for selection. Adopt wireless technologyyou can know outdoor temperature and humidity in indoor receiver. Record max/min indoor and outdoor temperature and humidity. Alarm function of upper and lower limits of indoor and outdoor temperature and humidity. Can be placed on the table with a bracket or hung on the wall with a hanging hole and magnet. With portable transmitter to induce outdoor temperature & humidity and transmit within 100m without obstacle. Temperature humidity meter is powered by 3 * 1.5V AAA batteries or DC 5V, transmitter is powered by 2 * 1.5V AA batteries.(Not included) Specifications: Material: ABS Color: Black Display: 94 * 54mm LCD Display Indoor Temperature Measuring Range: -1060 / 14140 Outdoor Temperature Range: -5070 / -58158 Temperature Accuracy: 1 Indoor Temperature Humidity Detection Period: testing once 30 seconds Outdoor Temperature Humidity Detection Period: testing once 57 seconds Humidity Measuring Range: 2095%RH Humidity Accuracy: 5%RH Function: Indoor/Outdoor Temperature and Humidity, Max & Min Value Display, / Switchable, Separated Transmitter Battery of Transmitter: 2 * 1.5V AA Batteries(Not Included) Temperature Humidity Meter Power Supply: 3 * 1.5V AAA Batteries(Not Included) or DC 5V Size of Transmitter: 130 * 40 * 22mm / 5.12 * 1.57 * 0.87in Temperature Humidity Meter Size: 150 * 86 * 23mm / 5.91 * 3.38 * 0.91in Transmitter Weight: 41g / 1.4oz Temperature Humidity Meter Weight: 115g / 4.0oz Package Size: 16 * 14 * 3cm / 6.30 * 5.51 * 1.18in Package Weight: 193g / 6.8oz Package List: 1 * Temperature & Humidity Meter 1 * Transmitter 1 * User Manual