Features: 1.BUILT IN PRESSURE SENSOR: Wireless weather forecast has a built in pressure sensor to predict weather conditions by changes in pressure. It can display the forecast for the future 12?24 hours with a weather forecast for wind speed. 2.HIGHLY ACCURATE MONITORING: Weather forecast uses high precise temperature and humidity sensors with the latest technology to reduce temperature error to 1c and humidity error to 5%, and also monitors temperature and humidity trends. 3.EASY TO INSTALL: Mini wireless weather forecast can be either mounted on the wall or placed on a desktop, allowing you to keep track of current conditions in multiple areas. Simple to operate and easy to install. 4.LCD COLOR DISPLAY: Weather forecast features a bright, easy to read LCD color display to monitor the weather conditions in your home and backyard. Remote wireless control with an effective distance of up to 328ft in open areas. 5.COMPACT AND LIGHTWEIGHT: Mini wireless weather forecast is compact and lightweight, and can be easily placed on a table or wall in any room, home, children's room, basement, storage or greenhouse. specification:Item Type: Wireless Weather Forecast Material: ABS Effective Distance: 328ft (Open Field) Indoor Temperature: 32 To 122 (0 To 50) Outdoor Temperature Range. Alkaline Battery: -4 To 140 (-20 To 60) Lithium Battery: -40 To 140 (-40 To 60) Temperature Accuracy: 1 Humidity Range: 20%-90% Humidity Accuracy: 5% Wind Direction Range: E, S, W, N, SE, NE, SW, NW Wind Direction Accuracy: +/-10 Degree Wind Speed Range: 0-50m/S Wind Speed Accuracy: 0.1m/S Wind Speed Unit: M/S, Km/H, Mph, Knots, Bft Receiver Battery Type: 2 x AAA Batteries (Not Included) Remote Sensor Battery Type: 2 x AA Batteries (Not Included) PackageList: 1 x LCD Receiver 1 x Weathervane Set 1 x Remote Sensor Tower 1 x Base Bracket 1 x Instruction Manual 7 x Screw 2 x Nut 4 x Expansion Screw Set Note1. Please install the receiver's battery first, then install the battery into the wind gauge remote sensor. 2. Despite the durability of the anemometer remote sensor, it should never be immersed in water. If extreme weather conditions may occur, move the transmitter temporarily to an indoor area for protection. 3. We recommend using a AA1.5V lithium battery as an outdoor sensor in cold weather climates.