This LCD digital temperature clock, which can display indoor/outdoor temperature and time simultaneously, is perfect for home use. It is suitable for desktop placement or wall mounting. Large LCD display, you can easily read the value. Accurate measurement to measure indoor and outdoor temperature. Features: Displays indoor/outdoor temperature and time simultaneously. Uses wireless technology so you can know the outdoor temperature from the indoor receiver. Records max/min indoor and outdoor temperature. 12H/24H time format, / temperature unit for selection. Can be placed on the table or hung on the wall. With portable transmitter to measure outdoor temperature and transmit within 100m without obstruction. Powered by 2 1.5V AAA batteries (not included). Specifications: Material: ABS Color: Black Screen: 94 * 54 mm LCD screen Indoor temperature measurement range: 050 / 32122 Outdoor temperature measurement range: -2070 / -4158 Temperature accuracy: 1 Indoor temperature detection period: testing every 30 seconds Outdoor temperature detection period: testing every 57 seconds Function: Time display, Indoor/Outdoor temperature, / Switchable, 12H/24H time format, Separated transmitter Battery for transmitter: 2 * 1.5V AA batteries (not included) Temperature clock power supply: 2 * 1.5V AAA batteries (not included) Transmitter size: 130 * 40 * 22 mm / 5.12 * 1.57 * 0.87 inches Hygrometer clock size: 150 * 86 * 23 mm / 5.91 * 3.38 * 0.91 inches Transmitter weight: 47 g / 1.64 oz Temperature clock weight: 122 g / 4.30 oz Package size: 16 * 14 * 3 cm / 6.30 * 5.51 * 1.18 inches Package weight: 259 g / 9.12 oz Package list: 1 * Temperature clock 1 * Transmitter 1 * User manual