Check the listing for details. Digital Thermometer Clock Indoor/OutdoorTemperature Wireless Transmitter Meter. Condition: New. Listed at 15.91 USD. Digital Thermometer Clock Indoor/OutdoorTemperature Wireless Transmitter Meter Features:Display indoor/outdoor temperature and time at the same time.Adopt wireless technology，you can know outdoor temperature in indoor receiver.Record 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 sensor outdoor temperature and transmit within 100m without obstacle.Powered by 2 1.5V AAA batteries(Not included). Specifications:Material: ABSColor: Black Display: 94 * 54mm LCD DisplayIndoor Temperature Measuring Range: 0～50℃ / 32～122℉Outdoor Temperature Range: -20～70℃ / -4～158℉Temperature Accuracy: ±1℃Indoor Temperature Detection Period: testing once 30 secondsOutdoor Temperature Detection Period: testing once 57 secondsFunction: Time Display, Indoor/Outdoor Temperature, ℃/℉ Switchable, 12H/24H time format, Separated TransmitterBattery of Transmitter: 2 * 1.5V AA Batteries(Not Included)Temperature Clock Power Supply: 2 * 1.5V AAA Batteries(Not Included)Size of Transmitter: 130 * 40 * 22mm / 5.12 * 1.57 * 0.87inHygrometer Clock Size: 150 * 86 * 23mm / 5.91 * 3.38 * 0.91inTransmitter Weight: 47g / 1.64ozTemperature Clock Weight: 122g / 4.30ozPackage Size: 16 * 14 * 3cm / 6.30 * 5.51 * 1.18in Package List:1 * Temperature Clock1 * Transmitter1 * User Manual