Features:1. 3 line LCD display.2. Show the outdoor temperature/humidity and indoor temperature/humidity at the same time.3. °C/°F exchangeable.4. Recording the highest and lowest temperature/humidity value every day.5. Can hang on the wall or put on the desk.6. Max outdoor temperature sensing distance: 1.5m.Specifications:Outdoor temperature survey range: -50°C to 70°C (-58°F to 158°F)Indoor temperature survey range: 0°C to 50°C (32°F to 122°F)Analyze degree: ±0.1°CHumidity survey range: 25%RH to 98%RHAnalyze degree: 1%RHAccurate precision: ±5%RHGeneral Characteristic:Battery Type: 1 * 1.5V AAA(not included)Package Size: 13.1 * 10.8 * 3cm / 5.2 * 4.3 * 1.2inPackage Weight: 114.5g / 4ozPackage list:1 * Indoor Outdoor Thermometer Hygrometer1 * Operation Instruction