The ThermoPro outdoor temperature thermometer is equipped with a professional grade outdoor temperature sensor with high accuracy down to ±1.1°C. With its 150 meters far range and rainproof design, you can place the wireless outdoor thermometer wherever you want and monitor the temperature of your entire environment even on rainy days. 150m Remote Distance: With up to 500ft wireless transmission distance (unobstructed), this outdoor thermometer allows you to monitor indoor and outdoor temperature Indoor temperature range: -4°F~158°F (-20°C~70°C) Outdoor temperature range: -58°F~158°F (-50°C~70°C) Temperature tolerance: +/-2℉ (+/-1.1°C) .Update rate: 50s. low battery indicator supports up to 3 temperature sensors: indoor home thermometer supports up to 3 outdoor temperature sensors, suitable for room, patio, basement, greenhouse, garden, etc. freely monitors the temperature in different places, such as Rainproof Sensor: Wireless Sensor Indoor/Outdoor Room Thermometer has rainproof design, allows you to monitor outdoor temperature even on rainy days HIGH ACCURACY READINGS: Compact LCD outdoor temperature accurate to plus and minus 1 Celsius, showing large indoor-outdoor temperature digits thermometer; Fahrenheit and Celsius can be selected. MULTIPLE MOUNTING OPTIONS - The wireless remote thermometer has 3 mounting options so you can place it anywhere: durable stand for table top, strong magnet for metal surface, hanging hole for hook.