This indoor outdoor thermometer and hygrometer can provide accurate humidity and temperature readings both indoors and outdoors at the same time. With a large LCD screen for easy data reading, and it can display current humidity and temperature, temperature/humidity trend, and record maximum and minimum humidity/temperature. Features: Help you control indoor/outdoor temperature and humidity in real time. fast response and high accuracy, providing accurate and up-to-date readings. With a large LCD screen for easy data reading, and features backlight and touch screen, turn the backlight on/off, making it easy for reading in the dark. (Automatic stop after 10s). Support / switchable, check temperature/humidity in past or last 24 hours, and record/clear maximum and minimum temperature and humidity. Several mounting methods. This thermometer features tabletop, wall mounting and a magnet mounting design, convenient mounting feature for every type of room. Comes with a wireless remote sensor to track indoor and outdoor temperatures, and it can transmit readings to the connected digital thermometer and hygrometer using a wire signal under 433MHz. Up to 60m / 200ft transmission distance. The remote sensor is equipped with a hanging hole for easy placement, which can be hanged on the wall or a tree, or placed in a baby's room, bedroom, warehouse or greenhouse. are powered by 2 * AAA batteries (not included), both digital thermometer hygrometer and remote sensor. Features : Material: ABS color: White + Black Indoor Temperature: -4~158 (-20~70) Outdoor temperature: -40~158 (-40~70) Temperature Accuracy: 1 Temperature Resolution: 0.1/0.1 Humidity: 20%~95% Humidity Accuracy: 5% Humidity Resolution: 1% Transmission distance (remote sensor): 60m/200ft water resistant level (remote sensor): IPX4 Powered by: 2 * AAA Batteries (not included) Item Size (Digital Hygrometer): 114 * 96mm / 4.4 * 3.7in Package Size: 155 * 135 * 33mm / 6.10 * 5.31 * 1.30in Package weight: 232g / 8.18oz 1 * Digital Thermometer and Hygrometer 1 * Remote Sensor 1 * User Manual (English)